MESON Chess Problem Database

Problem Display
PID: 46400 (7k/6pp/4B2R/7K/8/8/8/B7 w - - 0 1)

Green, Joshua

StrateGems, 2003

7k/6pp/4B2R/7K/8/8/8/B7

#2

4 + 3

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rg6?
      • threat
        • 2.Bxg7#
      • 1...h6
        • 2.Rxh6#
      • 1...hxg6+!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Rf8#
      • 1...g6+
        • 2.Rxg6#
      • 1...gxf6
        • 2.Bxf6#
      • 1...h6
        • 2.Rxh6#

This anticipates 183076(2017)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Threat
        • B(A),XP(a)
      • Vars
        • P(b);OGATEB::R(D),XP(b)
      • Refutation
        • P(b);CHECK,XR(D)
  • Actual
    • R(D);N_PINP(a)
    • Threat
      • R(D)
    • Vars
      • P(a);CHECK,OGATEB::B(A)+R(D),XP(a)
      • P(a);OGATE,P_SPINP(a),XR(D)::B(A),XP(a)
      • P(b);OGATEB::R(D),XP(b)
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