MESON Chess Problem Database

Problem Display
PID: 18164 (8/5Qpr/8/6k1/8/3K2P1/6P1/3B4 w - - 0 1)

Robins, George

Time & Tide, 1953

8/5Qpr/8/6k1/8/3K2P1/6P1/3B4

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qh5#
    • 1...g6
      • 2.Qf4#
  • Tries
    • 1.Ke4?
      • 1...Kh6
        • 2.Qh5#
      • 1...Rh1
        • 2.Qxg7#
      • 1...Rh2
        • 2.Qxg7#
      • 1...Rh3
        • 2.Qxg7#
      • 1...Rh5
        • 2.Qxg7#
      • 1...Rh6
        • 2.Qf5#
      • 1...Rh8
        • 2.Qxg7#
      • 1...g6
        • 2.Qf4#
      • 1...Rh4+!
    • 1.Qf5+?
      • 1...Kh6
        • 2.Qh5#
      • 1...Kxf5!
    • 1.Qxg7+?
      • 1...Kf5
        • 2.Bg4#
      • 1...Rxg7!
  • Keys
    • 1.Bg4!
      • 1...Kxg4
        • 2.Qg6#
      • 1...Kh6
        • 2.Qh5#
      • 1...Rh1
        • 2.Qxg7#
      • 1...Rh2
        • 2.Qxg7#
      • 1...Rh3
        • 2.Qxg7#
      • 1...Rh4
        • 2.Qxg7#
      • 1...Rh5
        • 2.Qxg7#
      • 1...Rh6
        • 2.Qf5#
      • 1...Rh8
        • 2.Qxg7#
      • 1...g6
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(E)
    • P(b);SBLOCK::QAB1(E)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • R(c);N_GUARD::QAR2(E),XP(b)
        • R(c);SBLOCK::QAR1(E)
        • P(b);SBLOCK::QAB1(E)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::B(A)
      • Refutation
        • R(c);XQ(E)
  • Actual
    • B(A);
    • Vars
      • K(a);P-FLIGHT,XB(A)::QAR2(E)
      • K(a);S_FLIGHT::QAR1(E)
      • R(c);N_GUARD::QAR2(E),XP(b)
      • R(c);N_GUARD,P_PINP(D)::QAR2(E),XP(b)
      • R(c);SBLOCK::QAR1(E)
      • P(b);SBLOCK::QAB1(E)
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