MESON Chess Problem Database

Problem Display
PID: 80737 (8/pp6/2p5/kPQ5/8/1K6/8/8 w - - 0 1)

Amirov, Talip Khasanovich

De Waarheid, 1963

8/pp6/2p5/kPQ5/8/1K6/8/8

#2

3 + 4

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...cxb5
      • 2.Qxa7#
    • 1...a6
      • 2.b6#
    • 1...b6
      • 2.Qb4#
  • Tries
    • 1.Kc3?
      • 1...Ka4
        • 2.Qb4#
      • 1...cxb5
        • 2.Qxa7#
      • 1...b6
        • 2.Qb4#
      • 1...a6!
    • 1.Kc4?
      • threat
        • 2.Qxa7#
      • 1...cxb5+
        • 2.Qxb5#
      • 1...Ka4
        • 2.Qb4#
        • 2.Qxa7#
      • 1...b6
        • 2.Qa3#
        • 2.Qb4#
      • 1...a6!
    • 1.bxc6+?
      • 1...b5
        • 2.Qxa7#
      • 1...Ka6!
  • Keys
    • 1.Ka3!
      • 1...cxb5
        • 2.Qxa7#
      • 1...a6
        • 2.b6#
      • 1...b6
        • 2.Qb4#

This anticipates 23044(1996)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);P_SPINP(b),SBLOCK,XP(B)::QAR2(C),XP(c)
    • P(c);SBLOCK::QAR(C)+P(B)
    • P(d);SBLOCK::QAB1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • P(b);P_SPINP(b),SBLOCK,XP(B)::QAR2(C),XP(c)
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • P(c);
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR2(C),XP(c)
      • Vars
        • P(b);CHECK,OGATE,P_SPINP(b),XP(B)::QAR1(C),XP(b)
      • Refutation
        • P(c);
    • Try
      • P(B);CHECK,XP(b)
      • Vars
        • P(d);P_SPINP(d),SBLOCK::QAR2(C),XP(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • P(b);P_SPINP(b),SBLOCK,XP(B)::QAR2(C),XP(c)
      • P(c);SBLOCK::QAR(C)+P(B)
      • P(d);SBLOCK::QAB1(C)
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