1rb3r1/pp2ppbp/n2pkn2/1qp5/2PP4/4BP1P/P1Q1P3/RN2KBNR w KQ - 2 15
FEN state: 1rb3r1/pp2ppbp/n2pkn2/1qp5/2PP4/4BP1P/P1Q1P3/RN2KBNR w KQ - 2 15 ; Best move: c4b5
The current state of the chess board is: Black rook at b8, black bishop at c8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at e7, black pawn at f7, black bishop at g7 and black pawn at h7. Black knight at a6, black pawn at d6, black king at e6 and black knight at f6. Black queen at b5 and black pawn at c5. White pawn at c4 and white pawn at d4. White bishop at e3, white pawn at f3 and white pawn at h3. White pawn at a2, white queen at c2 and white pawn at e2. White rook at a1, white knight at b1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 2. Full move number is 15. White to move.