MESON Chess Problem Database

Problem Display
PID: 276196 (7k/5Br1/5KP1/8/8/7P/8/6Q1 w - - 0 1)

Ivanov, Vadim Aleksandrovich

Pat a Mat, 1990

7k/5Br1/5KP1/8/8/7P/8/6Q1

#2

5 + 2

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • 1...Rxg6+
        • 2.Kxg6#
      • 1...Rxf7+
        • 2.Kxf7#
      • 1...Rh7
        • 2.Qa8#
      • 1...Rg8!
  • Keys
    • 1.Qd4!
      • 1...Rxg6+
        • 2.Kxg6#
      • 1...Rxf7+
        • 2.Kxf7#
      • 1...Rh7
        • 2.Qd8#
      • 1...Rg8
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • R(a);CHECK,XP(D)::QAB(A)+K(C),XR(a)
        • R(a);CHECK,XB(E)::QAB(A)+K(C),XR(a)
        • R(a);N_GUARD::QAB1(A)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Vars
      • R(a);CHECK,XP(D)::QAB(A)+K(C),XR(a)
      • R(a);CHECK,XB(E)::QAB(A)+K(C),XR(a)
      • R(a);N_GUARD::QAR(A)
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