MESON Chess Problem Database

Problem Display
PID: 156919 (Q7/8/8/1PP5/bpB5/k7/1p6/1K6 w - - 0 1)

Agapov, Igor Alexeyevich

SuperProblem 139. TT, 2015

Q7/8/8/1PP5/bpB5/k7/1p6/1K6

#2

5 + 4

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Bf1?
      • 1...Kb3
        • 2.Qf3#
      • 1...b3!
    • 1.Be2?
      • 1...Kb3
        • 2.Qf3#
      • 1...b3!
    • 1.Qf3+?
      • 1...Bb3
        • 2.Qxb3#
      • 1...b3!
  • Keys
    • 1.c6!
      • 1...b3
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(b);N_SPINB(c),P-FLIGHT::QAR(E)
      • Refutation
        • P(d);
    • Try
      • B(B);
      • Vars
        • K(b);N_SPINB(c),P-FLIGHT::QAR(E)
      • Refutation
        • P(d);
    • Try
      • Q(E);CHECK,N_PINB(c)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(E),XB(c)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • P(D);
    • Vars
      • P(d);OGATEB::QAB(E)
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