MESON Chess Problem Database
Problem Display
PID: 204955 (6bB/1PN1p3/5r2/4kB1n/2PrN1K1/8/4n3/Q7 w - - 0 1)
Onkoud, Abdelaziz
Phenix, 1995
#2
8 + 7
SOLUTION
- SOUND
- Tries
- 1.Sd5?
- threat
- 2.b8Q#
- 2.b8B#
- 1...Bxd5
- 2.b8Q#
- 2.b8B#
- 1...Be6
- 2.b8Q#
- 2.b8B#
- 1...Bf7
- 2.b8Q#
- 2.b8B#
- 1...Bh7
- 2.b8Q#
- 2.b8B#
- 1...Sc1
- 2.b8Q#
- 2.b8B#
- 1...Sg1
- 2.b8Q#
- 2.b8B#
- 1...Sc3
- 2.b8Q#
- 2.b8B#
- 1...Seg3
- 2.b8Q#
- 2.b8B#
- 1...Sef4
- 2.b8Q#
- 2.b8B#
- 1...Shg3
- 2.b8Q#
- 2.b8B#
- 1...Shf4
- 2.b8Q#
- 2.b8B#
- 1...e6
- 2.b8Q#
- 2.b8B#
- 1...Sg7!
- threat
- 1.Se6?
- threat
- 2.b8Q#
- 2.b8B#
- 1...Bxe6
- 2.b8Q#
- 2.b8B#
- 1...Bf7
- 2.b8Q#
- 2.b8B#
- 1...Bh7
- 2.b8Q#
- 2.b8B#
- 1...Sc1
- 2.Qxd4#
- 2.b8Q#
- 2.b8B#
- 1...Sg1
- 2.Qxd4#
- 2.b8Q#
- 2.b8B#
- 1...Seg3
- 2.Qxd4#
- 2.b8Q#
- 2.b8B#
- 1...Sef4
- 2.Qxd4#
- 2.b8Q#
- 2.b8B#
- 1...Shg3
- 2.b8Q#
- 2.b8B#
- 1...Shf4
- 2.b8Q#
- 2.b8B#
- 1...Sg7
- 2.b8Q#
- 2.b8B#
- 1...Sc3!
- threat
- 1.b8Q?
- threat
- 2.Sb5#
- 2.Sd5#
- 2.Sa6#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...Sc3
- 2.Sd5#
- 1...Bd5
- 2.Sb5#
- 2.Sxd5#
- 2.Sa6#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...Be6
- 2.Sb5#
- 2.Sd5#
- 2.Sa6#
- 2.Sxe6#
- 2.Sa8#
- 2.Se8#
- 1...Sg7
- 2.Se6#
- 1...e6
- 2.Sb5#
- 2.Sd5#
- 2.Sa6#
- 2.Sxe6#
- 2.Sa8#
- 2.Se8#
- 2.Qb5#
- 1...Bxc4!
- threat
- 1.b8B?
- threat
- 2.Sb5#
- 2.Sd5#
- 2.Sa6#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...Sc3
- 2.Sd5#
- 1...Bd5
- 2.Sb5#
- 2.Sxd5#
- 2.Sa6#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...Be6
- 2.Sb5#
- 2.Sd5#
- 2.Sa6#
- 2.Sxe6#
- 2.Sa8#
- 2.Se8#
- 1...Sg7
- 2.Se6#
- 1...e6
- 2.Sb5#
- 2.Sd5#
- 2.Sa6#
- 2.Sxe6#
- 2.Sa8#
- 2.Se8#
- 1...Bxc4!
- threat
- 1.Sd5?
- Keys
- 1.b8S!
- threat
- 2.Sc6#
- 2.Sd7#
- 1...Sc3
- 2.Sc6#
- 1...Bd5
- 2.Sd7#
- 1...Be6
- 2.Sc6#
- 1...Sg7
- 2.Sd7#
- threat
- 1.b8S!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(G);
- Threat
- P=Q
- Vars
- B(g);XS(G)::P=Q
- B(g);P_PINB(E)::P=Q
- B(g);::P=Q
- S(a);::P=Q
- S(a);N_SPINR(b),P_SPINR(e)::P=Q
- S(a);N_PINS(C)::P=Q
- S(d);::P=Q
- S(d);N_PINS(C)::P=Q
- P(f);::P=Q
- Refutation
- S(d);
- Try
- S(G);
- Threat
- P=Q
- Vars
- B(g);P_PINB(E),XS(G)::P=Q
- B(g);::P=Q
- S(d);::P=Q
- S(d);N_PINS(C)::P=Q
- Refutation
- S(a);N_SPINR(b),P_SPINR(e)
- Try
- P(F);
- Threat
- DUALS(6)
- Vars
- S(a);N_SPINR(b),P_SPINR(e)::QAB(F)+S(G)
- S(d);::QAB(F)+S(G)
- Refutation
- B(g);XP(B)
- Try
- P(F);
- Threat
- DUALS(6)
- Vars
- S(a);N_SPINR(b),P_SPINR(e)::B(F)+S(G)
- S(d);::B(F)+S(G)
- Refutation
- B(g);XP(B)
- Try
- Actual
- P(F);
- Threat
- DUALS(2)
- Vars
- S(a);N_SPINR(b),P_SPINR(e)::S(F)
- B(g);::S(F)
- B(g);P_PINB(E)::S(F)
- S(d);::S(F)
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