1n2k2r/1pq2p1p/1r1pp1p1/p2P4/2P1nP2/4P1P1/PP2N2P/RNBK3b w k - 2 18
FEN state: 1n2k2r/1pq2p1p/1r1pp1p1/p2P4/2P1nP2/4P1P1/PP2N2P/RNBK3b w k - 2 18 ; Best move: b2b3
The current state of the chess board is: Black knight at b8, black king at e8 and black rook at h8. Black pawn at b7, black queen at c7, black pawn at f7 and black pawn at h7. Black rook at b6, black pawn at d6, black pawn at e6 and black pawn at g6. Black pawn at a5 and white pawn at d5. White pawn at c4, black knight at e4 and white pawn at f4. White pawn at e3 and white pawn at g3. White pawn at a2, white pawn at b2, white knight at e2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at d1 and black bishop at h1. Black kingside is the only castle move available. Half move number is 2. Full move number is 18. White to move.