1rb1k1nr/p2pqp2/n2bp1pp/1pp5/1PP3Q1/2BPP1PB/P4N1P/R3K1R1 w Qk - 4 20
FEN state: 1rb1k1nr/p2pqp2/n2bp1pp/1pp5/1PP3Q1/2BPP1PB/P4N1P/R3K1R1 w Qk - 4 20 ; Best move: c3h8
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at d7, black queen at e7 and black pawn at f7. Black knight at a6, black bishop at d6, black pawn at e6, black pawn at g6 and black pawn at h6. Black pawn at b5 and black pawn at c5. White pawn at b4, white pawn at c4 and white queen at g4. White bishop at c3, white pawn at d3, white pawn at e3, white pawn at g3 and white bishop at h3. White pawn at a2, white knight at f2 and white pawn at h2. White rook at a1, white king at e1 and white rook at g1. White queenside and black kingside castles are available. Half move number is 4. Full move number is 20. White to move.