MESON Chess Problem Database

Problem Display
PID: 157137 (5rk1/8/R4pK1/8/8/8/8/Q7 w - - 0 1)

Zvekic, Zelimir

Sahovski Glasnik, 1969

5rk1/8/R4pK1/8/8/8/8/Q7

#2

3 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Rxa8#
    • 1...f5
      • 2.Qg7#
  • Tries
    • 1.Qa2+?
      • 1...Rf7
        • 2.Ra8#
      • 1...Kh8!
  • Keys
    • 1.Ra8!
      • 1...Kh8
        • 2.Rxf8#
      • 1...Rxa8
        • 2.Qxa8#
      • 1...Rb8
        • 2.Rxb8#
      • 1...Rc8
        • 2.Rxc8#
      • 1...Rd8
        • 2.Rxd8#
      • 1...Re8
        • 2.Rxe8#
      • 1...f5
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATEB::R(B),XR(b)
    • P(a);OGATE::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);P_SPINR(b)::R(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(B);P_PINR(b)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a)::R(B),XR(b)
      • R(b);N_SPINR(b),OGATE,XR(B)::QAR(A),XR(b)
      • R(b);OGATEB::R(B),XR(b)
      • P(a);OGATE::QAR1(A)
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