MESON Chess Problem Database

Problem Display
PID: 235009 (1Q6/6r1/k4PPR/8/K7/8/8/8 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sem Shakhmatnikh not, 2020

1Q6/6r1/k4PPR/8/K7/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qb5#
  • Tries
    • 1.Qa8+?
      • 1...Ra7
        • 2.Qc6#
      • 1...Kb6!
  • Keys
    • 1.f7!
      • 1...Rxg6
        • 2.Rxg6#
      • 1...Rxf7
        • 2.gxf7#
      • 1...Rh7
        • 2.gxh7#
      • 1...Rg8
        • 2.g7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::QAB1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • R(b);P_SPINR(b),SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);
    • Vars
      • R(b);OGATE,P_SPINR(b),XP(C)::R(D),XR(b)
      • R(b);OGATE,XP(B)::R(D)+P(C),XR(b)
      • R(b);OGATE::R(D)+P(C),XR(b)
      • R(b);OGATE::R(D)+P(C)
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