MESON Chess Problem Database

Problem Display
PID: 16459 (n1b1B3/1p2R3/k1P1p3/p1B1K3/P7/8/8/8 w - - 0 1)

Wynne, RL

The Problemist, 1940

n1b1B3/1p2R3/k1P1p3/p1B1K3/P7/8/8/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...bxc6
      • 2.Ra7#
    • 1...b5
      • 2.Ra7#
  • Keys
    • 1.cxb7!
      • threat
        • 2.Bb5#
        • 2.bxa8Q#
        • 2.bxa8R#
        • 2.bxc8Q#
        • 2.bxc8B#
        • 2.b8S#
      • 1...Bxb7
        • 2.Bb5#
      • 1...Bd7
        • 2.bxa8Q#
      • 1...Sb6
        • 2.b8S#
      • 1...Sc7
        • 2.bxc8Q#
        • 2.bxc8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(d);OGATE,XP(D)::R1(E)
    • P(d);OGATE::R1(E)
  • Actual
    • P(D);XP(d)
    • Threat
      • DUALS(6)
    • Vars
      • B(f);XP(D)::B(F)
      • B(f);::PXS(e)=Q
      • S(e);::P=S
      • S(e);::PXB(f)=Q
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