rn2kb1r/3b2pN/pp1p4/2p2p2/2PPp1Nn/1P4P1/P2KP2P/1RBQ1BR1 b - - 4 20
FEN state: rn2kb1r/3b2pN/pp1p4/2p2p2/2PPp1Nn/1P4P1/P2KP2P/1RBQ1BR1 b - - 4 20 ; Best move: h8h7
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black bishop at d7, black pawn at g7 and white knight at h7. Black pawn at a6, black pawn at b6 and black pawn at d6. Black pawn at c5 and black pawn at f5. White pawn at c4, white pawn at d4, black pawn at e4, white knight at g4 and black knight at h4. White pawn at b3 and white pawn at g3. White pawn at a2, white king at d2, white pawn at e2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. Black to move.