MESON Chess Problem Database

Problem Display
PID: 16516 (6Q1/K2kBP1p/7P/1P1N1p2/5p2/5P2/8/8 w - - 0 1)

Gunn, Robert Ivan

Chess, 1941

6Q1/K2kBP1p/7P/1P1N1p2/5p2/5P2/8/8

#2

8 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sxf4?
      • threat
        • 2.Qd8#
      • 1...Kc7
        • 2.Qd8#
      • 1...Kxe7!
    • 1.Sb6+?
      • 1...Kc7
        • 2.Qb8#
        • 2.Qc8#
        • 2.Qd8#
      • 1...Kxe7
        • 2.f8Q#
      • 1...Ke6!
    • 1.Sf6+?
      • 1...Kc7
        • 2.Qb8#
        • 2.Qd8#
      • 1...Kxe7
        • 2.f8Q#
      • 1...Ke6!
    • 1.Sc7?
      • threat
        • 2.Qd8#
      • 1...Kxc7
        • 2.Qd8#
      • 1...Kxe7!
    • 1.Qxh7?
      • threat
        • 2.Qxf5#
      • 1...Kc8
        • 2.Qxf5#
      • 1...Ke6!
    • 1.Qg5?
      • threat
        • 2.Qxf5#
      • 1...Kc8
        • 2.Qxf5#
      • 1...Ke6!
    • 1.Qg6?
      • threat
        • 2.Qxf5#
        • 2.Qc6#
      • 1...Kc8
        • 2.Qxf5#
        • 2.Qc6#
        • 2.Qe6#
      • 1...hxg6!
    • 1.f8S+?
      • 1...Kc8
        • 2.Qe6#
      • 1...Ke8!
  • Keys
    • 1.f8B!
      • 1...Kc8
        • 2.Qe6#
      • 1...Ke8
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);XP(a)
      • Threat
        • QAR1(H)
      • Vars
        • K(c);P-FLIGHT::QAB1(H)
      • Refutation
        • K(c);P-FLIGHT,XB(F)
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XB(F)::P=Q
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XB(F)::P=Q
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(H)
      • Vars
        • K(c);P-FLIGHT,XS(C)::QAB1(H)
      • Refutation
        • K(c);P-FLIGHT,XB(F)
    • Try
      • Q(H);XP(d)
      • Threat
        • QAB(H),XP(b)
      • Vars
        • K(c);S_FLIGHT::QAB(H),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • QAB(H),XP(b)
      • Vars
        • K(c);S_FLIGHT::QAB(H),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Refutation
        • P(d);XQ(H)
    • Try
      • P(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(H)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(G);
    • Vars
      • K(c);S_FLIGHT::QAB(H)
      • K(c);S_FLIGHT::S(C)
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