rnb1kb1r/pp1ppp2/8/6pp/1qp1nP1P/P2P2P1/1BPNP3/R2QKBNR b KQkq - 1 10
FEN state: rnb1kb1r/pp1ppp2/8/6pp/1qp1nP1P/P2P2P1/1BPNP3/R2QKBNR b KQkq - 1 10 ; Best move: b4b2
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, 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 pawn at f7. Black pawn at g5 and black pawn at h5. Black queen at b4, black pawn at c4, black knight at e4, white pawn at f4 and white pawn at h4. White pawn at a3, white pawn at d3 and white pawn at g3. White bishop at b2, white pawn at c2, white knight at d2 and white pawn at e2. White rook at a1, white queen at d1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 1. Full move number is 10. Black to move.