rnb3nr/2p5/pp2Pp2/2bkp1p1/3P1BK1/N2PP3/PP5P/1R3BNR b - - 0 21
FEN state: rnb3nr/2p5/pp2Pp2/2bkp1p1/3P1BK1/N2PP3/PP5P/1R3BNR b - - 0 21 ; Best move: g8h6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at c7. Black pawn at a6, black pawn at b6, white pawn at e6 and black pawn at f6. Black bishop at c5, black king at d5, black pawn at e5 and black pawn at g5. White pawn at d4, white bishop at f4 and white king at g4. White knight at a3, white pawn at d3 and white pawn at e3. White pawn at a2, white pawn at b2 and white pawn at h2. White rook at b1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.