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If we accept double speed ~60 elo. To close the 700 elo difference we need 2^12=1024 time odd is this true for all engines (both top-end and old-weak)? same for STC vs LTC? I doubt, going from 3400 to 3460 is more costly than going from 2700 to 2760 in terms of Time/CPU Anyway, I wrote >100 as a lo...

You got it all wrong Shredder 8 on my system is much much stronger than Komodo 13 on my Samsung Galaxy S8+, Check how deep my Dell All in One Computer can calculate, whereas Komodo does NOT even calculate half af much on my Android. in CCRL 40/15 Shredder 9 = 2726 elo, Komodo 13 = 3423 elo about 70...

Try with pawn odds.
Or play 40'+10" Shredder vs 10"+1" Komodo

Bxe6 seems clearly best: Among couple of winning moves - it's a matter of horizon effect, in some PV fail-high can happer a bit earlier, in some PV a bit later, so root node is unstable. After deepening both lines (~D=40 per move) to move #18 we get similar positions with BvsP and D=40 analysis for...

23 48 804k 0,48 1.Kh1 Qa8 2.Qh3 Nb7 3.Bxe6 Nc5 4. 23 48 804k 0,54 1.Qe4 Rc3 2.Bb4 Rc7 3.Rad1 Nb7 4. 23 48 804k 0,69 1.exd6 Nxf6 2.Qd3 Rc6 3.Bb2 Nd7 4 23 48 804k 0,89 1.Bb3 Nxb3 2.Qxb3 Qc7 3.Rac1 Rxc1 23 48 804k 0,94 1.Qd3 Qc7 2.Rac1 Rxc1 3.Rxc1 Qd7 23 48 804k 1,29 1.Bxe6 fxe6 2.f7+ Rxf7 3.Rxf7 Kxf ...

[SetUp "1"] [FEN "r4rk1/pq4bp/np1P1pp1/2p3B1/Q7/5N2/P4PPP/1R1R2K1 w - - 0 20"] [PlyCount "133"] 20. d7 Rad8 21. Ne5 fxg5 22. Qc4+ Kh8 23. Nf7+ Rxf7 24. Qxf7 Qc6 25. Rd3 Qf6 26. Qe8+ Qf8 27. Re1 Nc7 28. Rde3 Bf6 29. Qxf8+ Rxf8 30. Re8 Kg7 31. Rc8 Nd5 32. a4 Nb4 (32. .. g4) 33. Ree8 Rf7 34. d8=Q Bxd8...

[SetUp "1"] [FEN "r4rk1/pq4bp/np1P1pp1/2p3B1/Q7/5N2/P4PPP/1R1R2K1 w - - 0 20"] [PlyCount "33"] 20. d7 Rad8 21. Ne5 fxg5 22. Qc4+ Kh8 23. Nf7+ Rxf7 24. Qxf7 Qc6 25. Rd3 Qf6 26. Qe8+ Qf8 27. Re1 Nc7 28. Rde3 Bf6 29. Qxf8+ Rxf8 30. Re8 Kg7 31. Rc8 Nd5 32. a4 Nb4 33. Ree8 Rf7 34. d8=Q Bxd8 35. Rexd8 Kf...

Task solving and elo play strength contradict each other. Tasks - are specially selected positions (1 in a billion) where traditional human or alpha-beta approach "stuck", that's why they are considered interesting. If you decrease alpha-beta pruning at this specific positions - you can get solution...

]8/1p2B3/4k3/7p/p1Pp3P/P2P1K2/8/4b3 w - - 6 51 What move(s) are "best"? SF-Dev + Syzygy6 stick @ 51. Bg5 to D=89 (510 MTBhits) [-0.7 .. -1.04] @ D=16 .. 83 -1.13 @ D=84 .. 88 [-1.15 .. -1.33] @ D=89 At D=89 (>510 MTBHits) SF switches to -1.15 Ke2 and recover to -0.88 @ 620 MTBHits In self-play with...

Stockfish does not clear its hash between moves. And it would be foolish to do so. In fact, "clear hash" only works if you klick on to the "Newgame" button of a chess GUI. This strange behavior may modifies the result of an automated engine-engine competition based on consecutive games. To clear ha...