How strong is your chess calculation? Can you calculate all the winning lines to checkmate here in this position from the chess game Perlasco – Grasi, Como, 1907?
[…] 1.♕xe8+ ♔xe8 2.♘d4+ (
2.♘f4+ doesnt work…
2…♔f8 and loses)
2…♔f8 (
2…♕e5 3.♖g8+ ♔e7 4.♘f5#) (
2…♔d8 3.♖g8#)
3.♖e8+ ♔xe8 4.♖g8+ ♔e7 5.♘f5#
