1n2k1nr/r2b4/2p1pp1p/ppq3p1/PP1p2P1/B1NPPNKP/8/R3QB1R w k - 0 20
FEN state: 1n2k1nr/r2b4/2p1pp1p/ppq3p1/PP1p2P1/B1NPPNKP/8/R3QB1R w k - 0 20 ; Best move: b4c5
The current state of the chess board is: Black knight at b8, black king at e8, black knight at g8 and black rook at h8. Black rook at a7 and black bishop at d7. Black pawn at c6, black pawn at e6, black pawn at f6 and black pawn at h6. Black pawn at a5, black pawn at b5, black queen at c5 and black pawn at g5. White pawn at a4, white pawn at b4, black pawn at d4 and white pawn at g4. White bishop at a3, white knight at c3, white pawn at d3, white pawn at e3, white knight at f3, white king at g3 and white pawn at h3. White rook at a1, white queen at e1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 20. White to move.