4k2r/rp2ppb1/7n/p2p2P1/PPp4P/1nPP3b/R1N2K1P/2B2B1R b k - 1 23
FEN state: 4k2r/rp2ppb1/7n/p2p2P1/PPp4P/1nPP3b/R1N2K1P/2B2B1R b k - 1 23 ; Best move: b3c1
The current state of the chess board is: Black king at e8 and black rook at h8. Black rook at a7, black pawn at b7, black pawn at e7, black pawn at f7 and black bishop at g7. Black knight at h6. Black pawn at a5, black pawn at d5 and white pawn at g5. White pawn at a4, white pawn at b4, black pawn at c4 and white pawn at h4. Black knight at b3, white pawn at c3, white pawn at d3 and black bishop at h3. White rook at a2, white knight at c2, white king at f2 and white pawn at h2. White bishop at c1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 1. Full move number is 23. Black to move.