rn1qkbr1/3b1p1p/8/2p3p1/ppNP2P1/P1PK1PBP/1P2P2R/1R3BN1 b - - 3 21
FEN state: rn1qkbr1/3b1p1p/8/2p3p1/ppNP2P1/P1PK1PBP/1P2P2R/1R3BN1 b - - 3 21 ; Best move: d7b5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black bishop at d7, black pawn at f7 and black pawn at h7. Black pawn at c5 and black pawn at g5. Black pawn at a4, black pawn at b4, white knight at c4, white pawn at d4 and white pawn at g4. White pawn at a3, white pawn at c3, white king at d3, white pawn at f3, white bishop at g3 and white pawn at h3. White pawn at b2, white pawn at e2 and white rook at h2. White rook at b1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.