MESON Chess Problem Database

Problem Display
PID: 9671 (b1k5/2B2R2/8/K1N5/Bp1pp3/5q2/8/2Q5 w - - 0 1)

Gamage, Frederick

3rd Prize, Western Daily Mercury, 1907

b1k5/2B2R2/8/K1N5/Bp1pp3/5q2/8/2Q5

#2

6 + 6

5424 Versunkene Schatze 1998

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qd8#
        • 2.Qg8#
      • 1...Qxf7
        • 2.Qd8#
      • 1...Qg2
        • 2.Qd8#
        • 2.Qf5#
      • 1...Qg4
        • 2.Qd8#
        • 2.Qxg4#
      • 1...Qg3
        • 2.Qd8#
        • 2.Qf5#
      • 1...Bc6
        • 2.Qd8#
      • 1...Qf6!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sd6#
      • 1...Qh5+
        • 2.Be5#
      • 1...Qf5+
        • 2.Be5#
      • 1...Kxb7
        • 2.Bf4#
      • 1...Bxb7
        • 2.Bd7#
      • 1...Qg3
        • 2.Bxg3#
      • 1...Qf4
        • 2.Bxf4#
      • 1...Qf6
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XR(F)::QAR1(A)
        • B(e);::QAR1(A)
      • Refutation
        • Q(a);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(a);CHECK,N_GUARD::QAR(A)+B(E)
      • K(f);S_FLIGHT,XS(D)::R(F)+B(E)
      • B(e);SBLOCK,XS(D)::B(B)
      • Q(a);N_GUARD::QAR(A)+B(E),XQ(a)
      • Q(a);N_GUARD::QAR(A)+B(E)
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