rn2kbn1/p5r1/1p5p/2pN1p2/b1P1pPp1/4P1R1/1P1PK2P/1RB1Q2B w q - 0 25
FEN state: rn2kbn1/p5r1/1p5p/2pN1p2/b1P1pPp1/4P1R1/1P1PK2P/1RB1Q2B w q - 0 25 ; Best move: b2b3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7 and black rook at g7. Black pawn at b6 and black pawn at h6. Black pawn at c5, white knight at d5 and black pawn at f5. Black bishop at a4, white pawn at c4, black pawn at e4, white pawn at f4 and black pawn at g4. White pawn at e3 and white rook at g3. White pawn at b2, white pawn at d2, white king at e2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at e1 and white bishop at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 25. White to move.