1rb1kn1r/1p1p1pBp/8/2p5/PnPP2Pq/1P3PRP/4P3/RNbK1B2 w k - 0 25
FEN state: 1rb1kn1r/1p1p1pBp/8/2p5/PnPP2Pq/1P3PRP/4P3/RNbK1B2 w k - 0 25 ; Best move: b1c3
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black knight at f8 and black rook at h8. Black pawn at b7, black pawn at d7, black pawn at f7, white bishop at g7 and black pawn at h7. Black pawn at c5. White pawn at a4, black knight at b4, white pawn at c4, white pawn at d4, white pawn at g4 and black queen at h4. White pawn at b3, white pawn at f3, white rook at g3 and white pawn at h3. White pawn at e2. White rook at a1, white knight at b1, black bishop at c1, white king at d1 and white bishop at f1. Black kingside is the only castle move available. Half move number is 0. Full move number is 25. White to move.