MESON Chess Problem Database

Problem Display
PID: 287118 (2BN4/2p5/3k1p2/8/K3P2b/5N2/8/6Q1 w - - 0 1)

Sumner, Christopher Richard Benson

Grantham Journal, 1924

(First published on Sat Oct 25 1924)

2BN4/2p5/3k1p2/8/K3P2b/5N2/8/6Q1

#2

6 + 4

15239 Valois Notebooks 2026

SOLUTION

  • SOUND
  • Tries
    • 1.Sb7+?
      • 1...Kc6
        • 2.Qc5#
      • 1...Ke7!
    • 1.Qd1+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke7!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qf8#
      • 1...Kc5
        • 2.Qxc7#
      • 1...f5
        • 2.Qe5#
      • 1...c5
        • 2.Qd7#
      • 1...c6
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAR2(A),XP(d)
      • P(c);OGATE::QAB1(A)
      • P(d);SBLOCK::QAR1(A)
      • P(d);SBLOCK::S(F)
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