[Event "Brussels"] [Site "Brussels"] [Round "0"] [White "Defosse"] [Black "Frank"] [Result "0-1"] [FEN "rn1q2k1/pbpp2pp/1p2p2r/5p2/2PPn3/P1PBP1P1/2QN1P1P/R1B2RK1 b - - 0 1"] {The a1-h8 diagonal} 1... Qh4 2. Nf3 (2. gxh4 Rg6+ 3. Kh1 Nxf2# {double check}) 2... Ng5 $1 {Rook and Bishop mate threats} 3. gxh4 (3. Nxh4 Nh3# { Thematic Bishop and Knight mate}) 3... Nxf3+ 4. Kg2 (4. Kh1 Rxh4 5. h3) 4... Ne1+ 5. Kg3 Rg6+ 6. Kf4 Rg4+ 7. Ke5 Nf3# 0-1