MESON Chess Problem Database

Problem Display
PID: 11165 (7B/4p2B/4Pr2/8/2N3pp/7n/5RKR/k5nQ w - - 0 1)

Boorer, PA

Chess, 1937

7B/4p2B/4Pr2/8/2N3pp/7n/5RKR/k5nQ

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Qxg1#
  • Tries
    • 1.Rxh3?
      • threat
        • 2.Ra3#
        • 2.Qxg1#
      • 1...g3
        • 2.Qxg1#
      • 1...gxh3+!
  • Keys
    • 1.Kf1!
      • threat
        • 2.Qa8#
      • 1...Sf3
        • 2.Ra2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD::QAR(A),XS(b)
  • Tries
    • Try
      • R(D);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR(A),XS(b)
      • Refutation
        • P(d);CHECK,XR(D)
  • Actual
    • K(C);N_PINS(b),P_SPINR(B),S_FLIGHT
    • Threat
      • QAB(A)
    • Vars
      • S(b);N_PINR(B)::R1(B)
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