MESON Chess Problem Database

Problem Display
PID: 103973 (5r2/7P/5P1k/5Q2/8/5K2/8/8 w - - 0 1)

Wirtanen, Erkki Aukusti

Borsodi Vegyesz, 1965-1966

5r2/7P/5P1k/5Q2/8/5K2/8/8

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6
      • 2.h8Q#
    • 1...Rg8
      • 2.hxg8S#
  • Tries
    • 1.Qg5+?
      • 1...Kxh7
        • 2.Qg7#
      • 1...Kxg5!
  • Keys
    • 1.Kg4!
      • threat
        • 2.Qh5#
      • 1...Rg8+
        • 2.hxg8S#
      • 1...Rxf6
        • 2.h8Q#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,P_PINQ(B),XP(C)::P=Q
    • R(b);OGATE::PXR(b)=S
  • Tries
    • Try
      • Q(B);CHECK,P_SPINP(C)
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(B)
    • Vars
      • R(b);CHECK,OGATE::PXR(b)=S
      • R(b);N_GUARD,XP(C)::P=Q
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