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Atomic chess engine

#11
By the way, post-game analysis and suggested move sequences are strange.

For example, this game:
en.lichess.org/s4btRDfJ/white#33

1. Nf3 f6 2. e3 g6? 3. Nd4 d6? 4. Nb5 Bf5? 5. Nxc7 Rc8? 6. Bb5+ Kd8 7. d3 Bg4 8. f3 Be6 9. b3 a6 10. c4 axb5 11. Ba3 Bf7 12. Nc3 h5? 13. Nd5 Bxd5 14. c5 b5 15. c6 Ke8 16. c7 h4 17. Bxd6? { (8.71 → 6.60) Mistake. Best move was h3. } (17. h3 e6 18. d4 Bg7 19. Bb4 Kf8 20. e4 Ne7 21. O-O Nc6 22. Bxd6 Rh5 23. Qe2 Rg5)

In this sequence suggested by stockfish there is white's blunder: 23 Qe2. After this move white gets checkmated in 5.
You can see checkmate sequence for black with Local Stockfish.
#12
This is a known issue with indirect king attacks and the solution is conceptionally easy, but takes some time.
#13
By the way, post-game analysis is somewhat weird.

en.lichess.org/eHMPeJp7/white#45

After 23. f4 white is lost in... -8 moves? Minus eight moves? OK.
After 23. ... Bxf4 white has 2.8 pawns advantage, and there is no "lost forced checkmate sequence" mark.
#14
Thanks for reporting. Since the moves are analyzed in reverse order it can happen that the evaluation of white's 23rd move is more accurate than that of black's 23rd move.

However, in this case it should still be able to find #8. A big bonus for rook contact checks might help it to find plans like Rxc3,Rc8,Rc1/Rc2,... . I am about to run a test.
#16
Oops, I should have attached a screenshot.
Computer had exactly 0:00.00 and I lost on time. It looks confusing
#17
No, it shouldn't. Black can still win, e.g. if white moves his queen to g2 and black captures with fxg2 exploding white's king.
#18
Sorry, I thought it was about insufficient material. Maybe there were a few milliseconds left for black, I don't know.
#19
One strange thing more. I played vs stockfish 8, it seemed to be a draw at move 33.

Stockfish didn't want a draw, he wanted me to resign.
It moved his king around and at move 74 moved a pawn to avoid 50-neutral-moves-draw.
Stockfish continued dancing and moved his knight at move 122, then he exchanged pawns and took my pawn with its knight.

Position turned to a pure draw. White has 3 pawns on white squares and black has 2 pawns and a black-squared bishop. They all block white pawns.

But Stockfish doesn't want a draw, so after 150 moves it has just... stopped moving. It's a game with unlimited time, so I can't flag stockfish.

Stockfish wants me to resign so doesn't move. It can wait for days, weeks and years. One day Stockfish will success in this game.

en.lichess.org/GVhUT1F320vm
http://savepic.ru/11193746.png

Well... is resigning the only way to finish this game? Or maybe Stockfish can be somehow forced to move?

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