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Up Topic The Rybka Lounge / Test Positions / Where Stockfish still not perfect?!
- - By Lazy Frank (****) [gb] Date 2018-04-16 09:50
Where Stockfish still not perfect (regards to TCEC season 11 superfinal).

Game 32

br1qk2r/4bpp1/2n1p3/1p2P2p/p1pP4/P3B2P/1PB1NPP1/1R1QR1K1 b k - 1 24


g6

br1qk2r/4bp2/2n1p1p1/1p2P2p/p1pP4/P3B2P/1PB1NPP1/1R1QR1K1 w k - 0 25


q5kr/3rbp2/2b1p1p1/1p2P3/2pP4/PpN2P1P/1P2QBP1/3RR1K1 b - - 2 34


Rh5

q5k1/3rbp2/2b1p1p1/1p2P2r/2pP4/PpN2P1P/1P2QBP1/3RR1K1 w - - 3 35


Game 55

5r1r/ppp1k1pp/2np1nq1/2b1p3/4P1b1/1B1PBN2/PPPN1PPP/R2QK2R w KQ - 7 11


Bxc5 dxc5 h3 Bxf3 Qxf3 Nd4 Qe3 Qxg2 O-O-O

5r1r/ppp1k1pp/5n2/2p1p3/3nP3/1B1PQ2P/PPPN1Pq1/2KR3R b - - 1 15


Game 67

2B5/k3b3/3ppn2/4p2P/1r6/6B1/5PPK/2R5 w - - 3 61


Rc7+ Kb8 Rxe7 Kxc8 Rxe6 Nxh5 Rxd6 Rb5 Rd1

2k5/8/8/1r2p2n/8/6B1/5PPK/3R4 b - - 2 65


Game 77

1rb1nrk1/q3p1b1/7p/p2pPp1R/1p3P2/3NP3/1PPQB1P1/1NK4R w - - 0 24


Qe1 Rb6 Qg3

2b1nrk1/q3p1b1/1r5p/p2pPp1R/1p3P2/3NP1Q1/1PP1B1P1/1NK4R b - - 3 25


Game 83

5b2/r4pk1/2B3pp/3Pq3/P1P3P1/2NQ4/KP6/8 w - - 1 48


Kb3

5b2/r4pk1/2B3pp/3Pq3/P1P3P1/1KNQ4/1P6/8 b - - 2 48


Game 89

4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - 7 45


Rd1

4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P4K1/3R4 b - - 8 45
Parent - - By user923005 (****) [us] Date 2018-04-16 18:27
Thanks for your analysis LF
Parent - By Lazy Frank (****) [gb] Date 2018-04-17 04:10 Edited 2018-04-17 07:54
You are welcome!
Quite interesting ... continue go trough this line:


[SetUp "1"]
[FEN "1rb1nrk1/q3p1b1/7p/p2pPp1R/1p3P2/3NP3/1PPQB1P1/1NK4R w - - 0 24"]
[PlyCount "27"]

24. Qe1 Rb6 25. Qg3 Qa6 26. Nd2 a4 27. Bf3
a3 28. Bxd5+ Be6 29. Bxe6+ Rxe6 30. Nc5 Rg6 31. Nxa6 Rxg3 32. Nxb4 Rxe3 33.
b3 Nc7 34. Nc4 Re4 35. g3 Nb5 36. R5h2 Ra8 37. Na2 e6 38. Rd2 Rb8 39. Rhd1
Bf8 40. Nd6 Nxd6 41. exd6
Parent - - By MaLaoshi (*) [tw] Date 2018-04-17 19:40 Edited 2018-04-17 19:49
As for the last one: I'd also wondered if the eval spike in game 89 was for real or not. In my own experiment, SF finds Rd1 convincingly, but it needs to go to d~54. So probably even with results from its previous long think still in hash, TCECFish was just one ply short of seeing/remembering the winning move when it decided not to spend further time on the position. Things might have gone differently with the ASMFish speedup...
Parent - - By Lazy Frank (****) [gb] Date 2018-04-17 20:02 Edited 2018-04-17 20:33
For real.

Kg8 fails to Kh3.
Qe2+ fails to Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Qe4+ Kh8 Bb4.
Parent - - By MaLaoshi (*) [tw] Date 2018-04-18 01:02
May I ask your attention to my recent post here about zugzwang trouble for SF-syzygy? With luck, I'm close to putting my finger on something that's bothered me (and more importantly, SF) for quite some time already.
Parent - - By user923005 (****) [us] Date 2018-04-18 18:55
I have found that adjusting for mobility is a cure for most zugzwang problems.
I can send you a binary if you send me a pm
Parent - By MaLaoshi (*) [tw] Date 2018-04-18 19:24
Thanks, but for one puzzle here or there I could always use the free versions of Komodo / Houdini, with NM-pruning off and Tactical Mode respectively. My interest is if this could lead to an improvement to SF that could pass fishtest (does fishtest even have syzygy?).
Parent - By user923005 (****) [us] Date 2018-04-19 23:31
Here are positions listed in this thread that I found  in the games of Stockfish, along with analysis that happened during the TCEC games:
1rb1nrk1/q3p1b1/7p/p2pPp1R/1p3P2/3NP3/1PPQB1P1/1NK4R w - - acd 35; acs 273; c3 "R5h3"; ce 166; c0 "
Engine Stockfish 260318";
2B5/k3b3/3ppn2/4p2P/1r6/6B1/5PPK/2R5 w - - acd 47; acs 91; c3 "h6"; ce 227; c0 "
Engine Stockfish 260318";
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 54; acs 110; c3 "Rf2"; ce 103; c0 "
Engine Stockfish 260318";
5b2/r4pk1/2B3pp/3Pq3/P1P3P1/2NQ4/KP6/8 w - - acd 28; acs 6; c3 "Qc2"; ce 142; c0 "
Engine Stockfish 260318";
5r1r/ppp1k1pp/2np1nq1/2b1p3/4P1b1/1B1PBN2/PPPN1PPP/R2QK2R w KQ - acd 39; acs 198; c3 "Ba4"; ce 126; c0 "
Engine Stockfish 260318";
br1qk2r/4bpp1/2n1p3/1p2P2p/p1pP4/P3B2P/1PB1NPP1/1R1QR1K1 b k - acd 45; acs 152; c3 "Na5"; ce -32; c0 "
Engine Stockfish 260318";
q5kr/3rbp2/2b1p1p1/1p2P3/2pP4/PpN2P1P/1P2QBP1/3RR1K1 b - - acd 47; acs 156; c3 "Qd8"; ce -46; c0 "
Engine Stockfish 260318";
rnbqk1nr/ppp1p1bp/6p1/3p1pB1/3P4/2N2P2/PPPQP1PP/R3KBNR b KQkq - acd 32; acs 64; c3 "a6"; ce -41; c0 "
Engine Stockfish 260318";

Here are the same positions with somewhat lengthy Stockfish analysis (with adjustments for mobility).  In each case, the move made by Stockfish during the game is shown as field c3:
1rb1nrk1/q3p1b1/7p/p2pPp1R/1p3P2/3NP3/1PPQB1P1/1NK4R w - - acd 40; acs 3500; bm R5h3; c3 "R5h3"; ce 138; pm R5h3;
pv R5h3 Nc7 Qe1 Rb6 Qg3 Kh7 Qh4 Nb5 Rg3 Rg6 Rxg6 Kxg6 Rh3 Kh7 Ne1 Ba6 Qh5 a4 Rg3 Qb6 Bd3 a3 Nd2 a2 Nb3 Kh8 Qg6 Qxg6 Rxg6 Ra8 Bxf5 Nc7 Na1 Rf8 Bd3 Bxd3 Nxd3 e6 Rg3 d4 e4 Kg8 Rf3 Ra8 Nxb4 Kf7 Nc6;
2B5/k3b3/3ppn2/4p2P/1r6/6B1/5PPK/2R5 w - - acd 46; acs 2142; bm h6; c3 "h6"; ce 233; pm h6; pv h6;

4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 56; acs 2142; bm Rd1; c3 "Rf2"; ce 140; pm Rd1;
pv Rd1 Qe2+;
5b2/r4pk1/2B3pp/3Pq3/P1P3P1/2NQ4/KP6/8 w - - acd 44; acs 2142; bm Qc2; c3 "Qc2"; ce 129; pm Qc2; pv Qc2;

5r1r/ppp1k1pp/2np1nq1/2b1p3/4P1b1/1B1PBN2/PPPN1PPP/R2QK2R w KQ - acd 45; acs 2142; bm Ba4; c3 "Ba4"; ce 101; pm Ba4;
pv Ba4 Nd4 c3 Ne6 Bb3 Bxe3 fxe3 Ng5 Qe2 Kd8 O-O-O Kc8 Rhf1 Kb8 h3 Bd7 Nxg5 Qxg5 Rf3 h5 Rdf1 Qh6 R1f2 h4 Kb1 Be8 Qe1 Bd7 Qg1 Bb5 Bc4 Bxc4 Nxc4 a6 g4 hxg3 Rxg3 g5 Rf5 Nd7 b4 Rxf5 exf5 Qh4 Nd2;
br1qk2r/4bpp1/2n1p3/1p2P2p/p1pP4/P3B2P/1PB1NPP1/1R1QR1K1 b k - acd 52; acs 2142; bm Na5; c3 "Na5"; ce -50; pm Na5;
pv Na5 Ng3 Nb3 Nxh5 g6 Ng3 Rb7 Bxb3 axb3 Ne4 Rd7 Nc3 Bc6 Qe2 Kf8 Rbc1 Rh5 Rcd1 Kg7 f3 Rh4 Kh2 Kg8 Rf1 Rh5 Ne4 Kg7 Rfe1 Kg8 Kg1 Kg7 Rf1 Kg8 Kh1 Bd5 Bf2 Bc6 Kh2 Bd5 Bg3 Rf5 Rfe1 Rh5 Qd2 Bxe4 fxe4 Bc5 d5 Bf8 Rf1 Bg7 Qd4 Qe7 Rde1;
q5kr/3rbp2/2b1p1p1/1p2P3/2pP4/PpN2P1P/1P2QBP1/3RR1K1 b - - acd 49; acs 2142; bm Qd8; c3 "Qd8"; ce -57; pm Qd8;
pv Qd8 Ne4 Bd5 Rf1 Rh5 Ng3 Rh7 Qe3 Bg5 Qc3 Kg7 Ne4 Rh5 Bg3 Rb7 Nd6 Rb6 Kh2 Kg8 Ne4 Rb7 Qe1 Kg7 Qe2 Rd7 Nd6 Qb8 Qe1 Ra7 Kh1 Bc6 Ne4 Qd8 Qc3 Bd5 Qb4 Rb7 Nd6 Rb8 Qe1 Bc6 Kg1 Kg8 Kh2 Bd5 Ne4 Rb7 Qb4 Kg7 Nd6;
rnbqk1nr/ppp1p1bp/6p1/3p1pB1/3P4/2N2P2/PPPQP1PP/R3KBNR b KQkq - acd 40; acs 2142; bm a6; c3 "a6"; cce -304; ce -79;
pm c6 {10} Nc6 {6} Nf6 {3} Be6 {1} h6 {1}; pv a6 O-O-O Nc6 e3 Be6 Be2 Bf7 f4 h6 Bh4 Nf6 Nf3 Ne4 Nxe4 fxe4 Ne5 Bxe5 fxe5 Qd7 b3 Be6 h3 O-O-O c4 Kb8 Be1 h5 Kb2 Rhf8 cxd5 Bxd5 Rc1 Qe8 h4 Qd7 Bg3 Be6 Qc3 Ka8 Kb1; white_wins 15; black_wins 2; draws 2;

The only move that differed from the analysis was the move for this position:
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 56; acs 2142; bm Rd1; c3 "Rf2"; ce 140; pm Rd1;
pv Rd1 Qe2+;

A dump of the full analysis shows that SF never differed from Rd1:
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 26; ce 143; acs 6; acn 41710;
pv Rd1 Kg8 Kh3 Qf6 Qd5+ Qf7 Bf4 Nc5 Qxf7+ Kxf7 Rd4 Nd3 b3 Ne1 Rxc4 Nxf3 Kg3 Ne5 Rc7+ Kg8 b4 Nd3 Bd2 Rb8 Bc3 g5 Rg7+ Kf8 Rxg5 Nxb4 Bd4 Ke7 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 27; ce 148; acs 9; acn 57863;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Qe4+ Kh8 Bc5 Nxc5 Qe8+ Kh7 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qc1 Qd4 Kh8 Qc3 Qg1+ Kf4 Qh2+ Ke4 Qg3 Qd2 Kh7 g5 Kg6 f4 Qb3 Qc3 Qb7+ Ke3 Qb6+ Qd4 Qb3+ Kf2 Kh7 Qe4+ Kg8 Qd5+ Kh7 Qe5 Qd3 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 28; ce 146; acs 12; acn 77889;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qc1 Qd4 Kh7 Kf2 Qc2+ Ke3 Qb3+ Kf4 Qb8+ Qe5 Qd8 Qe4+ g6 Ke3 Qg5+ Qf4 Qe7+ Kf2 Qd8 Kg2 Qd1 Qf7+ Kh6 Qf8+ Kh7 Qe7+ Kg8 Kg3 Qg1+ Kh4 Qh2+ Kg5 Qxb2 Kh6 Qc1+ Kxg6 Qc2+ Kg5 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 29; ce 148; acs 14; acn 93829;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qc1 Qd4 Kh7 Kf2 Qc2+ Ke3 Qb3+ Kf4 Qb8+ Qe5 Qd8 Qe4+ g6 Ke3 Qg5+ Qf4 Qe7+ Kf2 Qa7+ Qe3 Qg7 Qd2 Qa7+ Kg2 Qc5 g5 Kg8 Kg3 Qb6 f4 Qg1+ Kf3 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 30; ce 150; acs 16; acn 109553;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qc1 Qd4 Kh7 Kf2 Qc2+ Ke3 Qb3+ Kf4 Qb8+ Qe5 Qb4 Qf5+ Kh8 Qh5+ Kg8 Qd5+ Kh8 Qa8+ Kh7 Qe4+ Kg8 Qd4 Qb8+ Ke3 Qb3+ Ke4 Qc2+ Kd5 Qe2 f4 c3 Qxc3 Qxg4 Qc4 Qf5+ Kc6+ Kh7 b4 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 31; ce 148; acs 20; acn 136141;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qc1 Qd4 Kh7 Kf2 Qc2+ Ke3 Qb3+ Kf4 Qb8+ Qe5 Qd8 Qe4+ g6 Ke3 Qg5+ Qf4 Qe7+ Kf2 Qg7 Qd2 Qf6 g5 Qb6+ Kg3 Qe6 f4 Qe4 Kf2 Kg8 Qe3 Qd5 Qc3 Qe4 Qe5 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 32; ce 148; acs 21; acn 142865;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qc7+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 Qe6+ Kf8 Qf6+ Kg8 Qc3 Qe4 Qe3 Qd5 Kg3 Kh7 Qc3 Qe4 Qf3 Qd4 Qb7+ Kg8 Qb8+ Kh7 Qc7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 33; ce 148; acs 23; acn 160882;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qc7+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 Qe6+ Kf8 Qf6+ Kg8 Qc3 Qe4 Qe3 Qd5 Qe8+ Kh7 Qe7+ Kg8 Qe3 Kh7 Qe5 Qd2+ Kg3 Qd3+ Kh4 Qd7 Qe4 Qd3 Qe8 Kg7 Qe7+ Kh8 Qf8+ Kh7 Qf7+ Kh8 Qf6+ Kh7 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 34; ce 148; acs 26; acn 179002;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qc7+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 Qe6+ Kf8 Qf6+ Kg8 Qc3 Qe4 Qe3 Qd5 Qe2 Kh7 Qe7+ Kg8 Qe3 Kh7 Kg3 Kg8 Qe2 Kh7 Qf3 Qd4 Qb7+ Kh8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 35; ce 148; acs 28; acn 194409;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qc7+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 Qe6+ Kf8 Qf6+ Kg8 Qe5 Kh7 Qe2 Qd4+ Kg3 Qd5 Qe7+ Kg8 Qe3 Kh7 Qf3 Qd4 Qb7+ Kh8 Qb8+ Kh7 Qc7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 36; ce 148; acs 32; acn 217564;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe3 Qd6 Ke2 Qd5 Qe7+ Kg8 Qe5 Qd3+ Kf2 Kh7 Qc3 Qe4 Qe3 Qd5 Qe2 Qc5+ Kf3 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kh7 Qe7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 37; ce 148; acs 39; acn 268093;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe3 Qd6 Ke2 Qd5 Qe7+ Kg8 Qe5 Qd3+ Kf2 Kh7 Qc3 Qe4 Qe3 Qd5 Qh3+ Kg8 Qc3 Qe4 Qe3 Qd5 Kg3 Kh7 Qe7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 38; ce 148; acs 49; acn 345056;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 Qe6+ Kh7 Qf7+ Kh8 Qf6+ Kh7 Qc3 Qe4 Qe3 Qd5 Qe7+ Kg8 Qe2 Kh7 Kg3 Kg8 Qc2 Kh7 Kf2 Qc5+ Ke2 Qd4 Kf3 Qd5+ Kg3 Qd4 Qe2 Qd5 Qe7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 39; ce 148; acs 58; acn 403395;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe3 Qd5 Qc3 Qe4 Qe5 Qd3 Qe2 Qd5 Kg3 Kg8 Qc2 Kh7 Kf2 Qc5+ Kf3 Qd5+ Kg3 Qd4 Qe2 Qg1+ Kf3 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 40; ce 148; acs 72; acn 505215;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe2 Qd5 Qc2 Qc5+ Kf3 Qd5+ Kg3 Qd4 Qe2 Qd5 Qe3 Kg8 Qe8+ Kh7 Qe2 Kg8 Qe5 Qd3+ Kh4 Qd7 Qe4 Qd3 Qe8+ Kg7 Qe5+ Kf7 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 41; ce 148; acs 108; acn 757586;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Kf2 Kg8 Qd8+ Kg7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qf7+ Kh8 Qf6+ Kg8 Qe6+ Kf8 Qc8+ Kf7 Qb7+ Kg8 Qb8+ Kg7 Qc7+ Kf8 Qc5+ Kg8 Qe3 Qd5 Qe8+ Kh7 Qe7+ Kg8 Qe3 Kh7 Qc3 Qe4 Qe5 Qd3 Qe2 Qd4+ Kg3 Qd5 Qe7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 42; ce 148; acs 121; acn 850654;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Qe4+ Kh8 Bc5 Nxc5 Qe8+ Kh7 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qd7+ Kg8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Kh7 Qe7+ Kg8 Qe8+ Kh7 Qf7+ Kh8 Qf6+ Kg8 Qc3 Qe4 Qe5 Qd3 Qe3 Qd5 Qe8+ Kh7 Qe7+ Kg8 Qe3 Kh7 Qc3 Qe4 Qd2 Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 43; ce 148; acs 143; acn 1010000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qd7+ Kg8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Kh7 Qe7+ Kg8 Qe6+ Kh7 Qe2 Qd4+ Kg3 Qd5 Qe7+ Kg8 Qe3 Kf8 Kf2 Kg8 Qe8+ Kh7 Qe7+ Kg8 Qe5 Qd3 Qc3 Qe4 Qd2 Kf7 Qe3 Qd5 Qc3 Qe4 Qf6+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 44; ce 148; acs 163; acn 1160000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qd7+ Kg8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Kh7 Qe7+ Kg8 Qe6+ Kh7 Qf7+ Kh8 Qf6+ Kh7 Qc3 Qe4 Qe3 Qd5 Qe7+ Kg8 Qe5 Qd3 Qc3 Qe4 Qe3 Qd5 Qe8+ Kh7 Qe2 Qd4+ Kg3 Qd5 Qe3 Kg8 Qe8+ Kh7 Qe2 Kg8 Kg4 Kf8 Qe5 Qd3 Qh8+ Kf7 Qf6+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 45; ce 148; acs 214; acn 1549000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qd7+ Kg8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Kh7 Qc3 Qe4 Kg3 Qd5 Qf3 Qd4 Qe2 Qd5 Qe7+ Kg8 Qe3 Kh7 Qe2 Kg8 Qe8+ Kh7 Qe3 Kg8 Kf2 Kf7 Qc3 Qe4 Qf6+ Kg8 Qe5 Qd3 Qe6+ Kg7 Qe3 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 46; ce 148; acs 246; acn 1792000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qd7+ Kg8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Kf7 Qc3 Qe4 Qf6+ Kg8 Qe5 Qd3 Qe6+ Kh7 Qf7+ Kh8 Qe8+ Kh7 Qe2 Qd4+ Kg3 Qd5 Qe7+ Kg8 Qe8+ Kh7 Qe2 Kg8 Qc2 Kh7 Kf2 Qc5+ Ke2 Qd4 Kf3 Qd5+ Kg3 Qd4 Qc3 Qg1+ Kf3 Qh1+ Ke3 Qf1 Ke4 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 47; ce 148; acs 314; acn 2300000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Qe4+ Kh8 Bc5 Nxc5 Qe8+ Kh7 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qd7+ Kf8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Kf7 Qf6+ Kg8 Qc3 Qe4 Qd2 Kh7 Qe3 Qd5 Qe7+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qf7+ Kh8 Qf8+ Kh7 Qa3 Qe4 Qh3+ Kg8 Qe3 Qd5 Qe8+ Kh7 Qe2 Qd4+ Kg3 Qg1+ Kf3 Qh1+ Ke3 Qc6 Qh2+ Kg8 Qd2 Qe6+ Kd4 Qd7+ Ke3 Qh3+ Ke4 Qe6+ Kf3 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 48; ce 148; acs 360; acn 2622000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Qe4+ Kh8 Bc5 Nxc5 Qe8+ Kh7 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qd7+ Kf8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Kf7 Qf6+ Kg8 Qc3 Qe4 Qd2 Kh7 Qe3 Qd5 Qe2 Qd4+ Kf3 Qd5+ Kg3 Kg8 Qe3 Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd3+ Qe3 Qd5+ Kg3 Kg8 Qc3 Qe4 Qf3 Qe1+ Kh3 Qb1 Qd5+ Kh7 Qf7+ Kh8 Qe8+ Kg7 Qd7+ Kg8 Qd8+ Kh7 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 49; ce 148; acs 423; acn 3099000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Qe4+ Kh8 Bc5 Nxc5 Qe8+ Kh7 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qc3+ Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kf7 Qc2 Qe6 Qd2 Qe4 Kf2 Kg8 Qd6 Kf7 Qf6+ Kg8 Qd8+ Kg7 Qd7+ Kg8 Qd2 Kh7 Qe3 Qd5 Qc3 Qe4 Qe5 Qd3 Qc7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 50; ce 148; acs 480; acn 3533000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Qe4+ Kh8 Bc5 Nxc5 Qe8+ Kh7 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qc3+ Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kf7 Qc2 Qe6 Qd2 Qe4 Kf2 Kf8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3 Qe3 Qd5 Kg3 Kf7 Qf3 Qd4 Qc3 Qe4 Qf6+ Kg8 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd3+ Qe3 Qd1+ Qe2 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 51; ce 148; acs 517; acn 3802000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qc3+ Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kf7 Qc2 Qe6 Qd2 Qe4 Kf2 Kf8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 Qe6+ Kf8 Qf6+ Kg8 Qc3 Qe4 Qe3 Qd5 Kg3 Kf7 Qf3 Qd4 Qc3 Qe4 Qf6+ Kg8 Qe5 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 52; ce 148; acs 627; acn 4620000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qc3+ Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kf7 Qc2 Qe6 Qd2 Qe4 Kf2 Kf8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 Qe6+ Kh7 Qf7+ Kh8 Qf6+ Kh7 Qc3 Qe4 Qe3 Qd5 Qa3 Qe4 Qa7+ Kg8 Qe3 Qd5 Kg3 Kf7 Qc3 Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 53; ce 148; acs 831; acn 6204000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qc3+ Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kf7 Qc2 Qe6 Qd2 Qe4 Kf2 Kf8 Qd8+ Kf7 Qf6+ Kg8 Qe5 Qd3 Qe6+ Kf8 Qf6+ Kg8 Qe5 Qd2+ Kf3 Qd3+ Qe3 Qd1+ Qe2 Qb3+ Kf2 Qb6+ Kg2 Qb7+ Kh3 Qh1+ Kg3 Qg1+ Kf3 Qh1+ Kf2 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 54; ce 148; acs 935; acn 6993000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qc3+ Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kf7 Qc2 Qe6 Qd2 Qe4 Qd7+ Kf8 Qd6+ Kg8 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qb3+ Kf2 Qb6+ Kg2 Qb7+ Kf1 Qc6 Qg2 Qb5 Ke1 Kf7 Qd2 Qf5 Qd4 Qc2 Qd7+ Kg8 Qd5+ Kg7 Qd2 Qe4+ Kf2 Kf8 Qd8+ Kf7 Qf6+ Kg8 Qe5 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 55; ce 148; acs 1198; acn 9023000;
pv Rd1 Qe2+ Kg3 Qxd1 Qh5+ Kg8 Qxe8+ Kh7 Bc5 Nxc5 Qh5+ Kg8 Qxc5 Qe1+ Qf2 Qe5+ f4 Qe4 g5 g6 Qd2 Kg7 Qc3+ Kh7 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qd5+ Kg3 Kg8 Qe8+ Kh7 Qe3 Kg8 Qe2 Kf7 Qc2 Qe6 Qd2 Qe4 Qd7+ Kf8 Qd8+ Kg7 Qf6+ Kg8 Qe5 Qd3+ Kf2 Qd2+ Kf3 Qd1+ Qe2 Qb3+ Kg2 Qb7+ Kg1 Qd5 Qe8+ Kh7 Qe3 Kg8 Kf2 Kf7 Qc3 Qe4 Qf6+ Kg8 Qe5 Qd3 Qe8+ Kh7 Qe7+ Kg8 ; bm Rd1;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P1R2K1/8 w - - acd 56; ce 140; acs 2142; acn 16676000;
pv Rd1 Qe2+ ; bm Rd1;
Parent - By user923005 (****) [us] Date 2018-04-19 23:32
Analysis of other positions mentioned in the thread:
1kB5/2R1b3/3ppn2/4p2P/1r6/6B1/5PPK/8 w - - acd 48; acs 2142; bm Rxe7; ce 275; pm Rxe7;
pv Rxe7 Kxc8 Rxe6 Nxh5 Rxd6 Rb5 Kh3 Kc7 Rd1 Nf6 Kh4 Nd7 Kg5 Rb8 Kf5 Rf8+ Ke4 Kc6 Ra1 Nc5+ Kxe5 Nd3+ Ke6 Re8+ Kf7 Re2 Ra6+ Kd5 Rd6+ Kc4 Re6 Ra2 Kg6 Ra8 Kg7 Ra2 Re8 Kd4 Kg6 Ra5 Re2 Nc1 Re3 Nd3 Re8 Rb5 Re2 Nc1 Rc2 Nd3 Rd2 Ra5 Kf6 Kc4 Re2 Ra8 Kg7 Ra7+ Kh6 Kd4 Kg6 Ra8 Kg7 Nc1 Be5+ Kd5 Re3 Ra7+ Kh6 Ra6+ Kg5 Ra2 Bg3 Kd4 Re8 Ra5+ Kf6;
1r6/2kn4/8/4p1K1/8/6B1/5PP1/3R4 w - - acd 40; acs 322; bm Kf5; ce 316; pm Kf5;
pv Kf5 Rf8+ Ke4 Kd8 Ra1 Ke7 Bh4+ Kd6 Ra6+ Kc7 Kd5 Rf4 Ra7+ Kc8 Bg3 Rg4 Ra8+ Kb7 Ra1 e4 Kd4 Kb6 Rb1+ Kc6 Rc1+ Kb5 Rc7 Nb6 Rc5+ Ka6 Rh5 Kb7 Rh4 Rg8 Rh6 Rg4 Re6 Nd7 Rxe4 Rg6 Re8 Kc6 Re7 Nf8 Rc7+ Kb5 Rc1 Rg4+ Kd5 Rg5+ Kd6 Nh7 Ke7 Rg7+ Ke6 Rg6+ Ke5 Rg5+ Ke4;
2k5/4R3/3ppn2/4p2P/1r6/6B1/5PPK/8 w - - acd 50; acs 2142; bm Rxe6; ce 273; pm Rxe6; pv Rxe6;

2k5/8/3R4/4p2n/1r6/6B1/5PPK/8 b - - acd 47; acs 2142; bm Rb5; ce -241; pm Rb5; pv Rb5;

2k5/8/3pR3/4p2n/1r6/6B1/5PPK/8 w - - acd 51; acs 3600; bm Rxd6; ce 388; pm Rxd6;
pv Rxd6 Rb5 Kh3 Kc7 Rd1 Nf6 Kh4 Nd7 Kg4 Rb8 Kf5 Rf8+ Ke4 Kd8 Ra1 Ke7 Bh4+ Kd6 Ra6+ Kc7 Kd5 Rf4 Ra7+ Kc8 Bg3 Rg4 Ra8+ Kc7 Ke6 Rg6+ Kf5 Rf6+ Ke4 Kb6 Rg8 Kc6 Rg5 Rf8 Rg6+ Kb7 Rd6 Kc7 Rh6 Kc8 Rc6+ Kb7 Rg6 Kc8 Kd5 Re8 Re6 Rg8 Kd6 e4 Rxe4 Nb8 Re7 Na6 Ke6 Rg5 Ra7 Nc5+ Kf7 Rh5 Kg6 Rd5 Re7 Nd3 f4 Kd8 Re2 Rd4 Kf5 Ra4 Bh4+ Kd7 Re4 Ra5+ Kg4;
2k5/8/3pRn2/4p2P/1r6/6B1/5PPK/8 b - - acd 50; acs 2142; bm Nxh5; ce -373; pm Nxh5;
pv Nxh5 Rxd6;
2k5/8/8/1r2p2n/8/6B1/5PPK/3R4 b - - acd 43; acs 2142; bm Nf6; ce -357; pm Nf6;
pv Nf6 Kh3 Kc7 Kh4 Nd7 Kg5 Rb8 Kf5 Rf8+ Ke4 Kd8 Ra1 Ke7 Bh4+ Kd6 Ra6+ Kc7 Kd5 Rf4 Ra7+ Kc8 Bg3 Rg4 Ra8+ Kc7 Ke6 Rg6+ Kf5 Rf6+ Ke4 Rf7 Kd5 Rf6 Ra2 Rd6+ Ke4 Re6 Bh4 Rc6 Kf5 e4 Re2 Rc5+ Kf4 Ra5 Rxe4 Nc5 Re2 Ra4+ Kg3 Kd7 f4 Ne6 Bg5 Nd4 Re4 Nf5+ Kf3 Ra3+ Kf2 Nd6 Re5 Ra4 Kf3 Kc6 Re6 Kd5 Re5+ Kd4 Be7 Nc4;
4r2k/6p1/3Bq3/6Q1/2p3P1/1n3P2/1P4K1/3R4 b - - acd 55; acs 2142; bm Qe2+; ce -117; pm Qe2+;
pv Qe2+ Kg3;
5b2/r4p1k/2B3pp/3P4/PqPQ2P1/1KN5/1P6/8 w - - acd 49; acs 2142; bm Kc2; ce 128; pm Kc2;
pv Kc2 Bc5 Qd3 Bd6 Ne4 Be5 b3 Ra6 Qe3 Rb6 Bb5 Rf6 Nxf6+ Bxf6 d6 Qxd6 c5 Qd5 a5 Qh1 Bc4 Kg7 a6 Qa1 c6 Qh1 b4 Qxc6 Kb3 Qd7 Qf3 Bd4 Qe4 Ba7 Qe5+ Kf8 Qf4 Kg7 Ka3 Bd4 Bb3 Bf6 Qe4 Bd4 Qf3 Ba7 Bc4 Bd4 Kb3 Ba7 Qf1 Bb6 Ka3 Bd4 Qf3 Ba7 Qe4 Bd4 Bd5 Ba7 Qc4 Kf8 Kb2;
5b2/r4p1k/2B3pp/3P4/PqPQ2P1/2N5/1PK5/8 b - - acd 42; acs 2142; bm Ra6; ce -59; pm Ra6; pv Ra6;

5b2/r4p1k/2B3pp/3Pq3/P1P1Q1P1/1KN5/1P6/8 b - - acd 46; acs 2142; bm Qb8+; ce -127; pm Qb8+; pv Qb8+;

5b2/r4p1k/2B3pp/3Pq3/P1P3P1/1KNQ4/1P6/8 w - - acd 44; acs 2142; bm Qf3; ce 130; pm Qf3;
pv Qf3 Qd6;
5b2/r4p1k/2Bq2pp/3P4/P1P1Q1P1/1KN5/1P6/8 w - - acd 43; acs 2142; bm Qd3; ce 150; pm Qd3; pv Qd3;

5b2/r4p1k/2Bq2pp/3P4/P1PQ2P1/1KN5/1P6/8 b - - acd 44; acs 2142; bm Qb4+; ce -118; pm Qb4+;
pv Qb4+ Kc2 Bc5 Qd3 Bd6 Ne4 Be5 b3 Qa3 d6 Ra6 d7 Qb2+ Kd1 Bc7 Bd5 Ba5 Bxf7 Qa1+ Kc2 Qa2+ Kc1 Qa1+ Qb1 Qg7 Bd5 Qxd7 Qb2 Qg7 g5 Bd8 gxh6 Qxh6+ Kb1 Qf4 Qg2 Qe5 Qh3+ Kg7 Qd7+ Qe7 Qc8 Ra7 Kc2 Rd7 Nc5 Qe2+ Kb1 Re7 Ne6+ Rxe6 Qxe6 Qxe6 Bxe6 Kf6 Bd5 Ba5 Kb2;
5b2/r4pk1/2B3pp/3Pq3/P1P3P1/1KNQ4/1P6/8 b - - acd 43; acs 2142; bm Kg8; ce -125; pm Kg8;
pv Kg8 Qe4 Qd6 Ka2 Ra6 Bb5 Ra8 Qd3 Bg7 Kb3 Kh7 Qe3 Bf8 Qf3 Qb4+ Kc2 Rd8 Qxf7+ Bg7 Be8 Qd6 c5 Qh2+ Kb1 Qg1+ Ka2 Qxc5 Qxg6+ Kg8 Bb5 Qb4 g5 hxg5 Qxg5 Rc8 Qg3 Kf7 Qf3+ Kg8 Qh3 Rxc3 bxc3 Bxc3 Qh2 Bg7 Qg2 Qc3;
5r1r/ppp1k1pp/5n2/2p1p3/3nP3/1B1PQ2P/PPPN1Pq1/2KR3R b - - acd 44; acs 2142; bm Ne8; ce -97; pm Ne8; pv Ne8;

5r2/2kn4/8/4p3/4K3/6B1/5PP1/3R4 b - - acd 50; acs 2142; bm Kc6; ce -470; pm Kc6;
pv Kc6 Rh1 Nc5+ Kxe5 Nd3+ Ke6 Re8+ Kf7 Re2 Rh6+ Kd5 Rd6+ Kc4 Re6 Ra2 Kg6 Ra8 Kh5 Kd5 Rd6+ Ke4 Kg5 Nc5 f3+ Ke3 Bf4+ Ke2 Rd2+ Kf1 g3 Nb3 Rd3 Nc5 Rd5 Rg8+ Kf5 Na4 Bg5 Rc8 g4 Nc3 Rd2 Ke1 Rh2 Rc5+ Kg6 Nd5 Bd2+ Kf1 f4 Kg1 Re2 Kf1 Re5 Rc6+ Kf5 Nb6 Re6 Rc5+ Ke4 Nc4 Be3 Rc8 f5 Rg8 g5 Rf8 f6 Nxe3 Kxe3;
5r2/2kn4/8/4pK2/8/6B1/5PP1/3R4 w - - acd 44; acs 2142; bm Ke4; ce 453; pm Ke4; pv Ke4;

5r2/3n4/2k5/4p3/4K3/6B1/5PP1/3R4 w - - acd 52; acs 2142; bm Rh1; ce 454; pm Rh1;
pv Rh1 Nc5+ Kxe5 Nd3+ Ke6 Re8+ Kf7 Re2 Rh6+ Kd5 Rd6+ Kc4 Re6 Ra2 Kg6 Ra8 Kh5 Kd5 Rd6+ Ke4 Kg5 Rg8+ Rg6 Rf8 Kg4 Nb2 Re6+ Kd5 Re2 Rg8+ Kf3 Nd3 Bh2 Nb4 Re5+ Kc6 Re4 Nd3 Bf4 Kd5 g3 Rf8 Re2 Kd4 Re6 Rg8 Rd6+ Kc4 Be3 Ne1+ Ke2 Nc2 Rd1 Kc3 Kf3 Rf8+ Bf4 Nb4 Rd6 Kc4 Ke4 Rg8 Rd4+ Kb5 Be5 Nc2 Rd6 Na3 Rd3 Nc4 f4 Ka6 Rc3 Nb6 Ra3+ Kb7;
5r2/3n4/2k5/4p3/4K3/6B1/5PP1/7R b - - acd 48; acs 2142; bm Nc5+; ce -454; pm Nc5+;
pv Nc5+ Kxe5;
8/2k5/5n2/1r2p3/7K/6B1/5PP1/3R4 b - - acd 49; acs 2142; bm Nd7; ce -375; pm Nd7; pv Nd7;

8/2k5/5n2/1r2p3/8/6BK/5PP1/3R4 w - - acd 54; acs 2142; bm Kh4; ce 432; pm Kh4; pv Kh4;

8/2k5/8/1r2p2n/8/6B1/5PPK/3R4 w - - acd 53; acs 2142; bm Kh3; ce 424; pm Kh3; pv Kh3;

8/2k5/8/1r2p2n/8/6BK/5PP1/3R4 b - - acd 47; acs 2142; bm Nf6; ce -413; pm Nf6;
pv Nf6 Kh4;
8/2kn4/8/1r2p1K1/8/6B1/5PP1/3R4 b - - acd 48; acs 2142; bm Rb8; ce -394; pm Rb8;
pv Rb8 Kf5 Rf8+ Ke4 Kc6 Rh1 Nc5+ Kxe5 Nd3+ Ke6 Re8+ Kf7 Re2 Rh6+ Kd5 Rd6+ Kc4 Re6 Ra2 Kg6 Ra8 Kh5 Ra7 Kg4 Rg7+ Kf3 Kc5 Re4 Kd5 Re2 Rg6 Ke3 Nc5 Rd2+ Kc4 Rd4+ Kb5 Rd6 Rg8 Kf3 Nb7 Rd1 Rf8+ Bf4 Nc5 Rd6 Kc4 g3 Nb7 Re6 Nc5 Re7 Kd4 g4 Nd3 Re4+ Kd5 Ke3 Nb2 Re5+ Kc6 Ke4 Nd1 Re6+ Kb5 Kf3 Nc3 Re5+ Kb6;
8/2kn4/8/1r2p3/7K/6B1/5PP1/3R4 w - - acd 46; acs 2142; bm Kg5; ce 362; pm Kg5; pv Kg5;

br1qk2r/4bp2/2n1p1p1/1p2P2p/p1pP4/P3B2P/1PB1NPP1/1R1QR1K1 w k - acd 51; acs 2142; bm Nc3; ce 75; pm Nc3;
pv Nc3 O-O Qd2 b4 axb4 Nxb4 Nxa4 Nxc2 Qxc2 Rb3 Nc3 Qc7 Ra1 Bc6 Re2 Rfb8 Qc1 Ra8 Rxa8+ Bxa8 Qd2 Bb4 Bh6 Be7 Kh2 Qb8 f3 Bc6 Qc1 Bd5 Be3 Qb7 Qd2 Bc6 Bf2 Qa6 Qc1 Qb7 Kg1 Qb8 Rc2 Qb7 Kh2 Bd5 Be3 Rb4 Kg1 Rb3 Rd2 Bh4 Re2 Be7 Kh2 Bc6 Qd2;
q5k1/3rbp2/2b1p1p1/1p2P2r/2pP4/PpN2P1P/1P2QBP1/3RR1K1 w - - acd 43; acs 2142; bm d5; ce 77; pm d5;
pv d5 Bxd5 Nxb5 Qc6 Nc3 Rd8 Rf1 Rd7 Rd4 Bc5 Rg4 Bxf2+ Kxf2 Qc7 Re1 Bb7 Rxc4 Qd8 Ne4 Kg7 Nd6 Ba6 Qe4 Bxc4 Qxc4 Qb6+ Kf1 Rxe5 Rxe5 Rxd6 Qc3 f6 Re1 e5 Qb4 Qxb4 axb4 Rd4 Ke2 Rxb4 Kd3 Kf7 Kc3 Rb6 Re4 Rd6 Rc4 f5 Rc8 Rd1;
rn1qk2r/ppp1p1bp/4bnp1/3p1pB1/3P4/2N2P2/PPPQP1PP/2KR1BNR w kq - acd 40; acs 5160; bm Kb1; ce 69; pm Kb1;
pv Kb1 Nbd7 h3 Bf7 g4 a6 gxf5 gxf5 e3 Nb6 Nge2 Qd7 Nf4 O-O-O Nd3 Kb8 Rg1 Rdg8 Be2 Qe8 Nc5 Nc4 Bxc4 dxc4 Bf4 Nh5 Be5 Qc6 Bxg7 Nxg7 e4 fxe4 Qf4 Bg6 N3xe4 Ne6 Qe5 Nxc5 dxc5 Bxe4 fxe4 Qf6 Qd5 Rxg1;
Parent - - By Vinvin (***) [be] Date 2018-04-20 08:56
Can anybody sumarize this post, please ?
Is there any clear "best move" not found by Stockfish for all this positions ?
Parent - - By Lazy Frank (****) [gb] Date 2018-04-20 10:34
Yes.
Parent - - By Vinvin (***) [be] Date 2018-04-27 12:43
4 runs for this 7 positions
Condition :
i7-6*4GHz
Analyzing engine: Stockfish_180424_x64_modern
Use seconds per move : 1800 Seconds per move
Analysis Lines : Minimum search depth=14
Activate abort analysis : True.
Minimal analysis depth 22. Abort, if the correct move is held 2 additional ply

  4) .. g7-g6           Nc6-a5  
  5) .. Rh8-h5          Qa8-d8  
  6) Be3xc5             Bb3-a4  
  7) Rc1-c7             h5-h6   
  8) Qd2-e1             Rh5-h3  
  9) .. Ng8-f6          Ng8-f6  * 14 Seconds
10) Rd2-d1             Rd2-d1  * 0 Seconds

  4) .. g7-g6           Nc6-a5  
  5) .. Rh8-h5          Qa8-d8  
  6) Be3xc5             Be3xc5  * 2 Seconds
  7) Rc1-c7             h5-h6   
  8) Qd2-e1             Qd2-e1  * 1 Second
  9) .. Ng8-f6          a7-a6   
10) Rd2-d1             Rd2-f2  

  4) .. g7-g6           Nc6-a5  
  5) .. Rh8-h5          Rh8-h5  * 252 Seconds
  6) Be3xc5             Bb3-a4  
  7) Rc1-c7             h5-h6   
  8) Qd2-e1             Qd2-e1  * 1700 Seconds
  9) .. Ng8-f6          Ng8-f6  * 48 Seconds
10) Rd2-d1             Rd2-d1  * 0 Seconds

  4) .. g7-g6           Nc6-a5  
  5) .. Rh8-h5          Rh8-h5  * 115 Seconds
  6) Be3xc5             Bb3-a4  
  7) Rc1-c7             h5-h6   
  8) Qd2-e1             Qd2-e1  * 242 Seconds
  9) .. Ng8-f6          Ng8-f6  * 1435 Seconds
10) Rd2-d1             Rd2-d1  * 0 Seconds
Parent - By Lazy Frank (****) [gb] Date 2018-04-27 14:06
About Rc7+: write one full move forward 'Rc7+ Kb8' (only one logical move) and SF very quickly find it winning line.
Parent - By Lazy Frank (****) [gb] Date 2018-04-20 11:01
As well ... reworked PGN file of Season 11 superfinal: Golden Collection.
- By Lazy Frank (****) [gb] Date 2018-04-17 13:30
This one seems holdable:


[SetUp "1"]
[FEN "5b2/r4pk1/2B3pp/3Pq3/P1P3P1/2NQ4/KP6/8 w - - 1 48"]
[PlyCount "7"]

48. Kb3 Kh7 49. Qe4 Qd6 50. Qd4 Qb4+ 51. Kc2
- By Lazy Frank (****) [gb] Date 2018-04-17 20:10

[SetUp "1"]
[FEN "2B5/k3b3/3ppn2/4p2P/1r6/6B1/5PPK/2R5 w - - 3 61"]
[PlyCount "21"]

61. Rc7+ Kb8 62. Rxe7 Kxc8 63. Rxe6 Nxh5 64. Rxd6 Rb5 65. Rd1 Kc7 {Nf6 transposition} 66. Kh3 Nf6
67. Kh4 Nd7 68. Kg5 Rb8 69. Kf5 Rf8+ 70. Ke4 Kc6 71. Rh1
- - By Lazy Frank (****) [gb] Date 2018-04-18 07:31
Finally Stockfish loss in game 78.

rnbqk1nr/ppp1p1bp/6p1/3p1pB1/3P4/2N2P2/PPPQP1PP/R3KBNR b KQkq - 0 5


Stockfish played a6, Houdini played c6.
Key-move was early Nf6 (despite of higher evaluation at this point)

Nf6 (Be6 transposes) 0-0-0 Be6

rn1qk2r/ppp1p1bp/4bnp1/3p1pB1/3P4/2N2P2/PPPQP1PP/2KR1BNR w kq - 3 7
Parent - - By Lazy Frank (****) [gb] Date 2018-04-19 02:35

[ECO "D01"]
[Opening "Richter-Veresov"]
[Variation "3...Nbd7 4.f3"]
[PlyCount "20"]

1. d4 {B} f5 {B} 2. Nc3 {B} d5 {B} 3. Bg5 {B} g6 {B} 4. Qd2 Bg7 5. f3 Nf6
6. O-O-O Be6 7. e3 Nbd7 8. h3 h5 9. Kb1 a6 10. Bf4 c5


Most tricky opening for engines in superfinal.
Parent - By user923005 (****) [us] Date 2018-04-20 12:35
rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - acd 65; acs 6125138; bm c4; c0 "e4"; c2 "
perft 1 20 perft 2 400 perft 3 8902 perft 4 197281 perft 5 4865609 perft 6 119060324"; c3 "d4"; c4 "c4"; cce 38; ce 8; id "Fundamental Opening Position"; pm e4 {2379495} d4 {1725526} Nf3 {483679} c4 {479713} g3 {39820} f4 {35589} b3 {27764} Nc3 {13010} e3 {2686} b4 {2458} g4 {2450} c3 {1654} d3 {1649} a3 {1150} h3 {717} a4 {552} h4 {425} f3 {363} Nh3 {82} Na3 {28}; pv c4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 g3 e5 Nb5 Bb4 Bd2 a6 N5c3 d5 cxd5 Nxd5 Bg2 Be6 O-O Nb6 Na4 Bxd2 Bxc6 bxc6 Nxb6 Qxb6 Qxd2 O-O Qc2 f5 Nc3 f4 Na4 Qa7 Nc5 Qf7 Nxe6 Qxe6 Qe4 Rf6 b3 Rh6 Rac1 Qh3 Qg2 Qe6 Rc4 Rd8 Rfc1 fxg3 hxg3 Rd2 Rxc6 Qxc6 Qxc6 Rxc6 Rxc6 Rxa2 Kf1 Kf7 Rc7 Kf6 f3 Rb2 Ra7 Rxb3 Rxa6 Ke7 Ra7 Kf6 Kf2 Rb2 Ke3 Kg6 Ra6 Kg5; white_wins 1826279; black_wins 1425008; draws 1430947; Opening Fundamental opening position;
rnbqkbnr/pppppppp/8/8/3P4/8/PPP1PPPP/RNBQKBNR b KQkq - acd 48; acs 226889; bm e6; c3 "f5"; cce -42; ce -12;
pm Nf6 {1004729} d5 {434599} e6 {116089} f5 {63006} d6 {40940} g6 {32622} c5 {15043} c6 {6638} Nc6 {3907} b6 {2255} e5 {1558} b5 {1162} a6 {822} h6 {540} Na6 {446} a5 {334} h5 {316} g5 {233} f6 {171} Nh6 {117}; pv e6 c4 Nf6 Nf3 b6 g3 Be7 Bg2 Bb7 O-O O-O Nc3 Ne4 Qd3 Nxc3 Qxc3 c5 Rd1 Na6 b3 Bf6 Bb2 Rc8 Rac1 d5 Qe3 Nb4 Ne5 cxd4 Bxd4 Nxa2 Ra1 Nb4 Rxa7 Nc2 Qd2 Nxd4 Qxd4 dxc4 Bxb7 Bxe5 Qxd8; white_wins 597411; black_wins 453117; draws 491802; Opening Queen Pawn Opening: General. 1.d4; CaxtonID: 1623; ECO: A40;
rnbqkbnr/ppppp1pp/8/5p2/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - acd 38; acs 2075; bm g3; c3 "Nc3"; cce 58; ce 38; id "
C.A.P. 445860"; pm g3 {29873} Nf3 {10209} c4 {10045} e4 {4763} Nc3 {4069} Bg5 {2761} Bf4 {296} h3 {248} Qd3 {164} g4 {139} e3 {130} f4 {104} c3 {88} b3 {40} Nh3 {21} f3 {17} d5 {13} h4 {11} Nd2 {8} b4 {5} Be3 {1} a3 {1}; pv g3 e6 c4 Nf6 Bg2 d5 Bf4 Nc6 Nf3 dxc4 Qa4 Bb4+ Bd2 Bd6 Qxc4 O-O O-O a6 e3 Qe8 Rc1 Rb8 Nc3 h6 Ne2 g5 Qc2 Bd7 a3 Ne4 Nc3 Nxd2 Nxd2 e5 d5 Ne7 Nc4 e4 Qe2 Bb5; white_wins 21503; black_wins 14866; draws 14303; Opening Dutch Defense: General. 1.d4 f5; CaxtonID: 370; ECO: A80;
rnbqkbnr/ppppp1pp/8/5p2/3P4/2N5/PPP1PPPP/R1BQKBNR b KQkq - acd 36; acs 1145; bm Nf6; c3 "d5"; cce -55; ce -18; id "
C.A.P. 445856"; pm d5 {2016} Nf6 {1957} g6 {59} e6 {30} d6 {10} b6 {4} Nc6 {3} a6 {2} c5 {2} Kf7 {1} Na6 {1}; pv Nf6 Bg5 d5 e3 e6 Nf3 a6 Ne2 h6 Bf4 g5 Bg3 Bd6 Ne5 Ne4 Nc1 Nxg3 hxg3 Bxe5 dxe5 g4 Nd3 Nc6 Be2 Bd7 Qd2 Qe7 O-O-O O-O-O Kb1 Kb8 a3 Qg7 Qc3 Ka8 b3 Kb8 Ka1 h5; white_wins 1676; black_wins 1182; draws 1116; Opening Dutch Defense: Raphael Variation. 1.d4 f5 2.Nc3; CaxtonID: 394; ECO: A80;
rnbqkbnr/ppp1p1pp/8/3p1p2/3P4/2N5/PPP1PPPP/R1BQKBNR w KQkq - acd 37; acs 1915; bm Bf4; c3 "Bg5"; cce 54; ce 23;
pm Bg5 {1047} Bf4 {893} Nf3 {96} f3 {95} e4 {66} g4 {31} g3 {17} e3 {7} Qd3 {3} f4 {3} h3 {3} h4 {1}; pv Bf4 a6 e3 Nf6 Be2 e6 Nf3 c5 O-O Nc6 Na4 cxd4 exd4 Be7 Ne5 Nxe5 Bxe5 O-O Nc5 Qb6 c4 Bxc5 dxc5 Qxc5 Rc1 Qe7 Bf3 Rd8 Qd4 dxc4 Qxc4 Nd5 Rfe1 b5 Qc5 Qd7 g4 Bb7 gxf5 exf5 h3; white_wins 923; black_wins 656; draws 628; Opening Queen Pawn Game: Veresov Atack. Dutch System 1.d4 d5 2.Nc3 f5; CaxtonID: 1609; ECO: A80;
rnbqkbnr/ppp1p1pp/8/3p1pB1/3P4/2N5/PPP1PPPP/R2QKBNR b KQkq - acd 36; acs 1004; bm Nf6; c3 "g6"; cce -40; ce -23; pm Nf6;
pv Nf6 Bxf6 exf6 e3 g6 Bd3 Be6 h4 h5 Nce2 Bd6 Nf3 O-O O-O Nd7 b3 Bf7 c4 dxc4 bxc4 c5 Rb1 cxd4 exd4 b6 Re1 Qc7 Qd2 Rfe8 Nc3 Rxe1+ Rxe1 Bb4 Rb1 Bxc3 Qxc3 Re8 Re1; white_wins 421; black_wins 327; draws 285; Opening ECO:A80l; Dutch: 2.Nc3 d5 3.Bg5; 1.d4 f5 2.Nc3 d5 3.Bg5 *;
rnbqkbnr/ppp1p2p/6p1/3p1pB1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - acd 37; acs 1800; bm Qd2; c3 "Qd2"; cce 103; ce 57;
pm e3 {207} h4 {170} Qd2 {58} Nf3 {28} f3 {10} Nh3 {3} Qd3 {3} e4 {2} g3 {2}; pv Qd2 Bg7; white_wins 219; black_wins 112; draws 130;
rnbqkbnr/ppp1p2p/6p1/3p1pB1/3P4/2N5/PPPQPPPP/R3KBNR b KQkq - acd 36; acs 1847; bm c6; c3 "Bg7"; cce -222; ce -73; pm c6;
pv c6 O-O-O b5 f3 Nd7 e3 Bg7 Kb1 Nb6 h4 a5 Qe1 Nh6 Bd3 Nf7 e4 fxe4 fxe4 a4 Nf3 b4 Ne2 b3 e5 bxc2+ Bxc2 Nc4 Bc1 Qb6 Qc3 Bg4 h5 gxh5 Ng3 a3 b3 Nb2 Rd2 Nc4 Nxh5 Nxd2+ Bxd2; white_wins 35; black_wins 6; draws 17;
rnbqk1nr/ppp1p1bp/6p1/3p1pB1/3P4/2N5/PPPQPPPP/R3KBNR w KQkq - acd 40; acs 4680; bm O-O-O; c3 "f3"; cce 203; ce 85; pm O-O-O;
pv O-O-O Nf6 f3 c6 Nh3 O-O Nf4 Qd6 h4 Nbd7 h5 Nxh5 Nxh5 gxh5 Rxh5 Qg6 Rh1 e5 Bh6 exd4 Bxg7 Qxg7 Qxd4 Qxd4 Rxd4 Nf6 e3 Bd7 Rdh4 Rae8 Kd2 Re5 Rh6 Kg7 Bd3 Rfe8 Ne2 R8e7 a3 c5 Nf4 c4; white_wins 26; black_wins 5; draws 15;
rnbqk1nr/ppp1p1bp/6p1/3p1pB1/3P4/2N2P2/PPPQP1PP/R3KBNR b KQkq - acd 40; acs 556; bm a6; c3 "Nf6"; cce -304; ce -71; pm a6;
pv a6 e3 Be6 O-O-O Nc6 Be2 Bf7 f4 Nf6 Nf3 Ne4 Nxe4 fxe4 Ne5 h6 Bh4 Bxe5 fxe5 Qd7 Rhf1 Be6 h3 O-O-O b3 g5 Be1 Rhf8 Rxf8 Rxf8 c4 Qe8 Kb2 Kb8 Qc3 Qf7 cxd5 Bxd5 Rc1 Rd8 g4 Rf8 Bg3 Qe6 Bc4 Ka8 Qc2 Bxc4 bxc4; white_wins 15; black_wins 2; draws 2;
rnbqk2r/ppp1p1bp/5np1/3p1pB1/3P4/2N2P2/PPPQP1PP/R3KBNR w KQkq - acd 40; acs 3900; bm O-O-O; c3 "O-O-O"; cce 148; ce 61; pm O-O-O;
pv O-O-O Be6 h3 Bf7 g4 Nc6 Kb1 a6 e3 Qd6 gxf5 gxf5 Bd3 e6 Nge2 O-O-O a3 Bh5 Rhf1 Kb8 Na4 Bg6 Nc5 Rde8 Nc3 Nd7 Bf4 e5 Nxd7+ Qxd7 dxe5 Bxe5 Bxe5 Nxe5 Be2 Bf7 Nxd5 Qxd5 Qxd5 Bxd5 Rxd5 Nc6 f4 Rxe3 Bd3; white_wins 6; black_wins 3; draws 0;
rnbqk2r/ppp1p1bp/5np1/3p1pB1/3P4/2N2P2/PPPQP1PP/2KR1BNR b kq - acd 40; acs 1158; bm Be6; c3 "Be6"; cce -370; ce -76; pm Be6;
pv Be6 h3 Bf7 g4 Nc6 e3 a6 gxf5 gxf5 Bd3 Qd7 Nge2 Nb4 Nf4 Nxd3+ Nxd3 O-O-O Bf4 Nh5 Be5 Bf6 Ne2 b6 Bxf6 exf6 Kb1 Rhg8 Nef4 Kb7 Nxh5 Bxh5 Qf2 Qe7 Nf4 Be8 h4 Bc6 a3 Rde8 Rhe1 Kb8 c3 Kb7 h5 a5 h6; white_wins 5; black_wins 0; draws 1;
rn1qk2r/ppp1p1bp/4bnp1/3p1pB1/3P4/2N2P2/PPPQP1PP/2KR1BNR w kq - acd 40; acs 926; bm h3; c3 "e3"; ce 76; pm h3;
pv h3 Bf7 e3 Nbd7 Kb1 e6 g4 a6 e4 dxe4 fxe4 fxe4 Bg2 h6 Be3 Qe7 Nxe4 Nxe4 Bxe4 e5 Bxb7 Rb8 Bc6 O-O Bxd7 Qxd7 b3 Kh7 Ne2 Rbd8 Rhf1 Qe7 Qe1 g5 Ng3 Bg6 d5 e4 Rxf8 Qxf8 Ne2;
rn1qk2r/ppp1p1bp/4bnp1/3p1pB1/3P4/2N1PP2/PPPQ2PP/2KR1BNR b kq - acd 40; acs 1632; bm a6; c3 "Nbd7"; ce -61; pm a6;
pv a6 h3 Bf7 g4 Nc6 gxf5 gxf5 Kb1 Qd6 Bd3 Bg6 Nge2 O-O-O Rhg1 Kb8 Ng3 e6 a3 Rde8 Bf4 Qe7 h4 Rhg8 Na4 Ka7 Be2 Rc8 Nc5 Nd7 Bg5 Qe8 h5 Bf7 Nxd7 Qxd7 h6 Bf8 f4 Be7 Nh5 Qe8 Ng7;
r2qk2r/pppnp1bp/4bnp1/3p1pB1/3P4/2N1PP2/PPPQ2PP/2KR1BNR w kq - acd 40; acs 2015; bm h3; c3 "h3"; ce 81; pm h3;
pv h3 Bf7 g4 e6 Kb1 Qe7 Qh2 O-O-O gxf5 exf5 Nb5 Nf8 Nxa7+ Kb8 Nb5 Ne6 Bh4 g5 Bf2 Be8 Bd3 f4 Ne2 fxe3 Bxe3 Nh5 h4 h6 Nbc3 Rf8 hxg5 hxg5 Qg2 Nhf4 Bxf4 gxf4 Bg6 c6 a3 Bxg6 Qxg6 Rh8 Rhg1 Bf6 Rg4 Rde8 Qd3 Reg8 Rdg1 Rxg4 fxg4 Ka8 Na4;
r2qk2r/pppnp1bp/4bnp1/3p1pB1/3P4/2N1PP1P/PPPQ2P1/2KR1BNR b kq - acd 40; acs 1771; bm Bf7; c3 "h5"; ce -82; pm Bf7;
pv Bf7 g4 e6 Nge2 Qe7 gxf5 exf5 h4 Nb6 Ng3 O-O-O h5 Rhe8 Bb5 c6 Bd3 Kb8 a3 Ka8 Kb1 a6 Nce2 Rd7 Qa5 Ka7 Nc3 Qd8 hxg6 hxg6 b3 Bf8 Nge2 Be7 Nf4 Ng8 Bxe7 Rdxe7 e4 fxe4 fxe4 dxe4 Be2;
r2qk2r/pppnp1b1/4bnp1/3p1pBp/3P4/2N1PP1P/PPPQ2P1/2KR1BNR w kq - acd 40; acs 6600; bm Kb1; c3 "Kb1"; ce 86; pm Kb1;
pv Kb1 a6 Rh2 Nh7 Bh4 Nhf6 Bd3 c5 g4 hxg4 hxg4 c4 gxf5 gxf5 Bf1 Qc7 Rg2 Rxh4 Rxg7 Qd6 Qe1 Rh2 Nge2 O-O-O Nf4 Rdh8 Qg3 Nf8 b3 b5 Bg2 Bd7 e4 dxe4 fxe4 fxe4 Nxe4 Nxe4 Bxe4 R2h4 Rf1 Bh3 Rf2 Ne6 Rg8+ Kd7 Rxh8 Rxh8 d5 Nxf4 Rxf4 cxb3 axb3 b4 Bg6;
r2qk2r/pppnp1b1/4bnp1/3p1pBp/3P4/2N1PP1P/PPPQ2P1/1K1R1BNR b kq - acd 40; acs 763; bm Bf7; c3 "a6"; ce -87; pm Bf7;
pv Bf7 Rh2 Nh7 Bh4 Nhf6 g4 hxg4 hxg4 fxg4 e4 dxe4 fxe4 e5 Bg5 Rxh2 Qxh2 Qe7 d5 O-O-O Be2 Rh8 Qg3 Kb8 Bxg4 Be8 Be2 Bh6 Nf3 Bxg5 Qxg5 Rh5 Qe3 Qc5 Qc1 Qe7 Rg1 Nc5 Qe3 Rh3 a3 a5 Bf1 Rh8 b3 Qd6 Nd2 Qe7 Qe1 b6 Nf3 Rh5 Kb2 Qd6 Qe3 Qe7 Be2 Rh3 Rg5;
r2qk2r/1ppnp1b1/p3bnp1/3p1pBp/3P4/2N1PP1P/PPPQ2P1/1K1R1BNR w kq - acd 40; acs 3148; bm Rh2; c3 "Bf4"; ce 88; pm Rh2;
pv Rh2 Nh7 Bh4 Nhf6 Bd3 c5 g4 hxg4 hxg4 c4 gxf5 gxf5 Qg2 cxd3 Qxg7 dxc2+ Kxc2 Rg8 Qh6 Qc7 Bxf6 Nxf6 Ne2 Qd6 Kb1 O-O-O Nf4 Kb8 Qh4 Bf7 Qf2 Rc8 a3 Be8 Rc1 Bd7 Rh6 Rh8 Rg6 Rcg8 Rxg8+ Rxg8 Rh1 Be8 Rh6 Bf7 Qc2 Rg3 Rh8+ Ka7 Qf2 Rg8 Rxg8 Bxg8 Qg2 e6;
r2qk2r/1ppnp1b1/p3bnp1/3p1p1p/3P1B2/2N1PP1P/PPPQ2P1/1K1R1BNR b kq - acd 40; acs 1921; bm c5; c3 "c5"; ce -60; pm c5;
pv c5 h4 b5 Nh3 Rc8 Ng5 Qb6 g3 Bf7 Bh3 O-O Rhe1 b4 Na4 Qb5 b3 c4 e4 dxe4 fxe4 Nxe4 Nxe4 fxe4 Rxe4 Nf6 Re5 Nd5 Bxc8 Rxc8 Ree1 Qa5 Qg2 Be8 Qh3 cxb3 Qxc8 bxc2+ Qxc2 Bxa4 Qc4 Bxd1 Rxd1 Kh7 Rc1 Nxf4 gxf4 Qf5+ Ka1 Qxf4;
r2qk2r/1p1np1b1/p3bnp1/2pp1p1p/3P1B2/2N1PP1P/PPPQ2P1/1K1R1BNR w kq - acd 40; acs 973; bm h4; ce 42; pm h4;
pv h4 b5 Nh3 Rc8 Ng5 Qb6 g3 Bf7 Bh3 O-O Rhe1 Rfe8 Rg1 b4 Na4 Qb5 b3 cxd4 exd4 e5 dxe5 Nxe5 Rge1 Nc4 bxc4 Qxa4 Nxf7 Kxf7 Rxe8 Rxe8 Bf1 Qa3 Qd3 Qxd3 Bxd3 Rc8 cxd5 Nxd5 Bxa6 Nc3+ Kc1 Nxa2+ Kd2 Rc5 Rb1 Bf6 Rb3 Rc6 Bb7 Rc5 Bd6 Rb5 Ba6 Bc3+ Ke3 Rb6 Bc4+ Kf6 Bf4 Rc6;
- - By Lazy Frank (****) [gb] Date 2018-04-20 23:33 Edited 2018-04-22 09:05
Ok, Traxler : 5. Bxf7+, 11. Bxc5, 15. ... Ne8:

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bb3 d6 7. d3 Qe8 8. Nf3 Bg4 9. Be3 Qg6 10. Nbd2 Raf8 11. Bxc5 dxc5 12. h3 Bxf3 13. Qxf3 Nd4 14. Qe3 Qxg2 15. O-O-O Ne8

4nr1r/ppp1k1pp/8/2p1p3/3nP3/1B1PQ2P/PPPN1Pq1/2KR3R w - - 2 16


16. Rdf1 Qg6 17. Rhg1 (c3 transposes) Qf6 18. c3 Nxb3+ 19. axb3 b6

4nr1r/p1p1k1pp/1p3q2/2p1p3/4P3/1PPPQ2P/1P1N1P2/2K2RR1 w - - 0 20


And now mind blowing ...

f4(!)

4nr1r/p1p1k1pp/1p3q2/2p1p3/4PP2/1PPPQ2P/1P1N4/2K2RR1 b - f3 0 20


20... exf4 21. Qe2

4nr1r/p1p1k1pp/1p3q2/2p5/4Pp2/1PPP3P/1P1NQ3/2K2RR1 b - - 1 21


21... g6 22. Nf3 Qe6 23. b4 cxb4 24. cxb4

4nr1r/p1p1k2p/1p2q1p1/8/1P2Pp2/3P1N1P/1P2Q3/2K2RR1 b - - 0 24


24... Qa2 25. Qc2 a5 26. Nd4

4nr1r/2p1k2p/1p4p1/p7/1P1NPp2/3P3P/qPQ5/2K2RR1 b - - 1 26


26...  f3 (transposition axb4, sideline a4) 27. Kd2 axb4 28. Nc6+ Kf6 (sideline Kd7)

4nr1r/2p4p/1pN2kp1/8/1p2P3/3P1p1P/qPQK4/5RR1 w - - 2 29


One more key-position.

I strongly prefer Rg3 (instead of Rxf3+ or Nxb4).

29. Rg3 Kg7 30. Nxb4 Qe6 31. Qc3+ Qf6 32. Ke3 Qxc3 33. bxc3

4nr1r/2p3kp/1p4p1/8/1N2P3/2PPKpRP/8/5R2 b - - 0 33


Here i'm stop. I'm already spent so much time on Traxler! :mad:

[White "White"]
[Black "Black"]
[Opening "Traxler"]
[PlyCount "65"]

1. e4 {B} e5 {B} 2. Nf3 {B} Nc6 {B} 3. Bc4 {B} Nf6 {B} 4. Ng5 {B} Bc5 {B}
5. Bxf7+ {!} Ke7 6. Bb3 d6 7. d3 Qe8 8. Nf3 {Be3 transposes} Bg4 9. Be3 Qg6
10. Nbd2 Raf8 11. Bxc5 {!} dxc5 12. h3 Bxf3 13. Qxf3 Nd4 14. Qe3 Qxg2 15.
O-O-O Ne8 {sideline Nd7} 16. Rdf1 Qg6 17. Rhg1 {c3 transposes} Qf6 18. c3
Nxb3+ 19. axb3 b6 20. f4 {!} exf4 21. Qe2 g6 {sideline f3} 22. Nf3 Qe6 23.
b4 cxb4 {sideline Nf6} 24. cxb4 Qa2 {sidelines x} 25. Qc2 a5 26. Nd4 f3
{transposition axb4, sideline a4} 27. Kd2 axb4 28. Nc6+ Kf6 {sideline Kd7}
29. Rg3 Kg7 30. Nxb4 Qe6 31. Qc3+ Qf6 32. Ke3 Qxc3 33. bxc3
Parent - By MoKy (**) [sk] Date 2018-05-24 18:21
I suggest positional pawn sacrifice 14...Nh5!?
Up Topic The Rybka Lounge / Test Positions / Where Stockfish still not perfect?!

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