rnb1q1kr/p2pb2p/2p4n/5p2/PPpPp1p1/6P1/1B2PP1P/RN1QKBNR w - - 1 15
FEN state: rnb1q1kr/p2pb2p/2p4n/5p2/PPpPp1p1/6P1/1B2PP1P/RN1QKBNR w - - 1 15 ; Best move: b4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at e8, black king at g8 and black rook at h8. Black pawn at a7, black pawn at d7, black bishop at e7 and black pawn at h7. Black pawn at c6 and black knight at h6. Black pawn at f5. White pawn at a4, white pawn at b4, black pawn at c4, white pawn at d4, black pawn at e4 and black pawn at g4. White pawn at g3. White bishop at b2, white pawn at e2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, 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 1. Full move number is 15. White to move.