1nb1k2r/r2p1p1p/p1p5/P7/1p1np3/N1P3P1/1PQ1PKP1/R1B2BR1 w k - 0 25
FEN state: 1nb1k2r/r2p1p1p/p1p5/P7/1p1np3/N1P3P1/1PQ1PKP1/R1B2BR1 w k - 0 25 ; Best move: c2e4
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black rook at a7, black pawn at d7, black pawn at f7 and black pawn at h7. Black pawn at a6 and black pawn at c6. White pawn at a5. Black pawn at b4, black knight at d4 and black pawn at e4. White knight at a3, white pawn at c3 and white pawn at g3. White pawn at b2, white queen at c2, white pawn at e2, white king at f2 and white pawn at g2. White rook at a1, white bishop at c1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 0. Full move number is 25. White to move.