r1b1kb1r/pq2pp2/2p1n1Np/P2p2pn/8/1Q1P2PP/NP2PPB1/R1B1K2R w KQkq - 6 15
FEN state: r1b1kb1r/pq2pp2/2p1n1Np/P2p2pn/8/1Q1P2PP/NP2PPB1/R1B1K2R w KQkq - 6 15 ; Best move: b3b7
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black queen at b7, black pawn at e7 and black pawn at f7. Black pawn at c6, black knight at e6, white knight at g6 and black pawn at h6. White pawn at a5, black pawn at d5, black pawn at g5 and black knight at h5. White queen at b3, white pawn at d3, white pawn at g3 and white pawn at h3. White knight at a2, white pawn at b2, white pawn at e2, white pawn at f2 and white bishop at g2. White rook at a1, white bishop at c1, white king at e1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 6. Full move number is 15. White to move.