rn3rk1/pp1bp1b1/1N3p2/q2pN1p1/1p1P3p/PR6/2PBPPPP/2Q1KB1R b K - 3 15
FEN state: rn3rk1/pp1bp1b1/1N3p2/q2pN1p1/1p1P3p/PR6/2PBPPPP/2Q1KB1R b K - 3 15 ; Best move: a5b6
The current state of the chess board is: Black rook at a8, black knight at b8, black rook at f8 and black king at g8. Black pawn at a7, black pawn at b7, black bishop at d7, black pawn at e7 and black bishop at g7. White knight at b6 and black pawn at f6. Black queen at a5, black pawn at d5, white knight at e5 and black pawn at g5. Black pawn at b4, white pawn at d4 and black pawn at h4. White pawn at a3 and white rook at b3. White pawn at c2, white bishop at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White queen at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 3. Full move number is 15. Black to move.