1n1qkbr1/5r1p/p1p5/P2p2pn/1pbN1pP1/1Q2PP1P/RP1PB3/2B1K1NR b K - 4 23
FEN state: 1n1qkbr1/5r1p/p1p5/P2p2pn/1pbN1pP1/1Q2PP1P/RP1PB3/2B1K1NR b K - 4 23 ; Best move: c4b3
The current state of the chess board is: Black knight at b8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black rook at f7 and black pawn at h7. Black pawn at a6 and black pawn at c6. White pawn at a5, black pawn at d5, black pawn at g5 and black knight at h5. Black pawn at b4, black bishop at c4, white knight at d4, black pawn at f4 and white pawn at g4. White queen at b3, white pawn at e3, white pawn at f3 and white pawn at h3. White rook at a2, white pawn at b2, white pawn at d2 and white bishop at e2. White bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 4. Full move number is 23. Black to move.