MESON Chess Problem Database

Problem Display
PID: 47556 (5Q2/5pN1/6B1/8/6k1/6P1/6K1/8 w - - 0 1)

Olson, Anders Elis Waldemar

Tidskrift for Schack, 1927

5Q2/5pN1/6B1/8/6k1/6P1/6K1/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...fxg6
      • 2.Qf4#
    • 1...f5
      • 2.Qxf5#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Bh5#
        • 2.Qf5#
        • 2.Qh5#
      • 1...f5
        • 2.Qxf5#
      • 1...fxg6!
    • 1.Qe7?
      • threat
        • 2.Bf5#
        • 2.Bh5#
        • 2.Qh4#
      • 1...fxg6
        • 2.Qh4#
      • 1...f5
        • 2.Bxf5#
        • 2.Bh5#
        • 2.Qh4#
      • 1...f6!
    • 1.Qc8+?
      • 1...f5
        • 2.Qxf5#
      • 1...Kg5!
    • 1.Qd8?
      • threat
        • 2.Bf5#
        • 2.Bh5#
        • 2.Qh4#
      • 1...fxg6
        • 2.Qh4#
      • 1...f5
        • 2.Bxf5#
        • 2.Bh5#
        • 2.Qh4#
      • 1...f6!
    • 1.Qh8?
      • threat
        • 2.Qh4#
        • 2.Qh5#
      • 1...fxg6
        • 2.Qh4#
      • 1...Kg5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qb4#
      • 1...fxe6
        • 2.Qf4#
      • 1...fxg6
        • 2.Qf3#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,XB(C)::QAR1(E)
    • P(b);OGATE::QAB1(E),XP(b)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::QAB1(E),XP(b)
      • Refutation
        • P(b);XB(C)
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);XB(C)::QAR1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);XB(C)::QAR1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XB(C)::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • QAR(E)
    • Vars
      • P(b);OGATE,XS(D)::QAR1(E)
      • P(b);OGATE,XB(C)::QAB1(E)
      • P(b);OGATE::QAB1(E),XP(b)
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