rn2q1nr/p1b2k1p/bpPpp3/Q5B1/N1P1p2P/P2B4/1P3PP1/R3NK1R b - - 0 23
FEN state: rn2q1nr/p1b2k1p/bpPpp3/Q5B1/N1P1p2P/P2B4/1P3PP1/R3NK1R b - - 0 23 ; Best move: b6a5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at e8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at c7, black king at f7 and black pawn at h7. Black bishop at a6, black pawn at b6, white pawn at c6, black pawn at d6 and black pawn at e6. White queen at a5 and white bishop at g5. White knight at a4, white pawn at c4, black pawn at e4 and white pawn at h4. White pawn at a3 and white bishop at d3. White pawn at b2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at e1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. Black to move.