1rbk1b1r/pp1pp2n/n5p1/q1p1PpB1/NQ1P2P1/PP5p/2P2P1P/R3KBNR b - - 2 15
FEN state: 1rbk1b1r/pp1pp2n/n5p1/q1p1PpB1/NQ1P2P1/PP5p/2P2P1P/R3KBNR b - - 2 15 ; Best move: c5b4
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at e7 and black knight at h7. Black knight at a6 and black pawn at g6. Black queen at a5, black pawn at c5, white pawn at e5, black pawn at f5 and white bishop at g5. White knight at a4, white queen at b4, white pawn at d4 and white pawn at g4. White pawn at a3, white pawn at b3 and black pawn at h3. White pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 15. Black to move.