MESON Chess Problem Database

Problem Display
PID: 143742 (1Q6/8/2P2R2/p3p1p1/4kNP1/8/5K2/8 w - - 0 1)

Mercer, Arthur E

British Chess Magazine, 1896

1Q6/8/2P2R2/p3p1p1/4kNP1/8/5K2/8

#2

6 + 4

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Qb4#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qd3#
        • 2.Qd5#
      • 1...exf4
        • 2.Re6#
      • 1...gxf4!
    • 1.Qd8?
      • threat
        • 2.Qd3#
        • 2.Qd5#
      • 1...exf4
        • 2.Re6#
      • 1...gxf4!
  • Keys
    • 1.Rd6!
      • 1...Kxf4
        • 2.Rd4#
      • 1...exf4
        • 2.Qe8#
      • 1...gxf4
        • 2.Qb1#
      • 1...a4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAR(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,XS(B)::R(E)
      • Refutation
        • P(d);XS(B)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,SBLOCK,XS(B)::R(E)
      • Refutation
        • P(d);XS(B)
  • Actual
    • R(E);
    • Vars
      • K(a);P-FLIGHT,XS(B)::R(E)
      • P(c);OGATEB,SBLOCK,XS(B)::QAR(F)
      • P(d);SBLOCK,XS(B)::QAB(F)
      • P(b);N_GUARD::QAR(F)
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