r3k2r/ppn3p1/n2pbb1p/2pPPpq1/8/P1P1P3/QP2K1PP/RN3BNR w k - 3 18
FEN state: r3k2r/ppn3p1/n2pbb1p/2pPPpq1/8/P1P1P3/QP2K1PP/RN3BNR w k - 3 18 ; Best move: d5e6
The current state of the chess board is: Black rook at a8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black knight at c7 and black pawn at g7. Black knight at a6, black pawn at d6, black bishop at e6, black bishop at f6 and black pawn at h6. Black pawn at c5, white pawn at d5, white pawn at e5, black pawn at f5 and black queen at g5. White pawn at a3, white pawn at c3 and white pawn at e3. White queen at a2, white pawn at b2, white king at e2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 3. Full move number is 18. White to move.