MESON Chess Problem Database

Problem Display
PID: 159227 (K1Q5/Pr6/kP6/8/1P6/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1986

K1Q5/Pr6/kP6/8/1P6/8/8/8

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb6
      • 2.Qxb7#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qa5#
      • 1...Rb8+
        • 2.axb8S#
      • 1...Rxa7+!
  • Keys
    • 1.Qc6!
      • 1...Rxa7+
        • 2.bxa7#
      • 1...Rb8+
        • 2.axb8S#
      • 1...Rxb6
        • 2.Qa4#
      • 1...Rc7
        • 2.bxc7#
      • 1...Rd7
        • 2.b7#
      • 1...Re7
        • 2.b7#
      • 1...Rf7
        • 2.b7#
      • 1...Rg7
        • 2.b7#
      • 1...Rh7
        • 2.b7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINR(b),P-FLIGHT,XP(B)::QAR1(E),XR(b)
  • Tries
    • Try
      • Q(E);N_PINR(b)
      • Threat
        • QAR1(E)
      • Vars
        • R(b);CHECK,OGATE::PXR(b)=S
      • Refutation
        • R(b);CHECK,XP(C)
  • Actual
    • Q(E);N_PINR(b)
    • Vars
      • R(b);CHECK,OGATE,XP(C)::QAR(E)+P(B),XR(b)
      • R(b);CHECK,OGATE::PXR(b)=S
      • R(b);P_SPINR(b),SBLOCK,XP(B)::QAR2(E)
      • R(b);OGATE::QAR(E)+P(B),XR(b)
      • R(b);OGATE::QAR(E)+P(B)
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