MESON Chess Problem Database

Problem Display
PID: 253343 (2rr2q1/8/R1n2p2/n2k1N2/3P1R2/2p5/2P1Q1p1/6K1 w - - 0 1)

Browne, Gordon

The Field, 1912

(First published on Sat Oct 12 1912)

2rr2q1/8/R1n2p2/n2k1N2/3P1R2/2p5/2P1Q1p1/6K1

#2

7 + 9

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Qb5#
    • 1...Sc4
      • 2.Qe4#
    • 1...Sb4
      • 2.Se3#
      • 2.Se7#
    • 1...Se5
      • 2.Se3#
      • 2.Se7#
    • 1...Sa7
      • 2.Se3#
      • 2.Se7#
    • 1...Se7
      • 2.Se3#
      • 2.Sxe7#
    • 1...Sb8
      • 2.Se3#
      • 2.Se7#
  • Tries
    • 1.Qe5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Sxe5
        • 2.Se3#
      • 1...fxe5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.Qc5#
      • 1...Qe6
        • 2.Qc5#
      • 1...Qg3
        • 2.Qf7#
      • 1...Sc4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(i);SBLOCK::QAR2(C)
    • S(c);SBLOCK::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(C)
        • S(e);XQ(C)::S(F)
      • Refutation
        • P(f);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • S(F)
    • Vars
      • K(d);N_GUARD,S_FLIGHT::QAR1(C)
      • Q(i);SBLOCK::QAR1(C)
      • Q(i);N_GUARD::QAB(C)
      • S(c);SBLOCK::QAB1(C)
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