MESON Chess Problem Database

Problem Display
PID: 238556 (8/8/8/1pp5/k7/8/1K2Q3/1R6 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Sp. Comm., Problemist Ukraini, 2009

8/8/8/1pp5/k7/8/1K2Q3/1R6

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Ra1#
      • 2.Qa6#
  • Tries
    • 1.Kc1?
      • threat
        • 2.Qa2#
      • 1...Ka5
        • 2.Qxb5#
      • 1...b4
        • 2.Qa6#
      • 1...Ka3!
    • 1.Ka2?
      • threat
        • 2.Qxb5#
      • 1...Ka5
        • 2.Qxb5#
      • 1...b4
        • 2.Qa6#
      • 1...c4!
    • 1.Kc3?
      • threat
        • 2.Ra1#
        • 2.Qa2#
      • 1...Ka3
        • 2.Ra1#
      • 1...Ka5
        • 2.Qxb5#
      • 1...b4+!
  • Keys
    • 1.Ka1!
      • threat
        • 2.Qa2#
      • 1...Ka3
        • 2.Qa2#
      • 1...Ka5
        • 2.Qxb5#
      • 1...b4
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C),XP(b)
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR1(C),XP(b)
        • P(b);OGATE::QAR2(C)
      • Refutation
        • P(c);
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::R(A)
        • K(a);P-FLIGHT::QAR1(C),XP(b)
      • Refutation
        • P(b);CHECK
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR2(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);P-FLIGHT::QAR1(C),XP(b)
      • P(b);OGATE::QAR2(C)
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