MESON Chess Problem Database

Problem Display
PID: 228061 (qk1b4/N1R1p3/1P2K3/1Q6/8/8/8/8 w - - 0 1)

Kuzmichev, Vladimir Viktorovich

64 Shakhmatnoe obozrenie, 2020

qk1b4/N1R1p3/1P2K3/1Q6/8/8/8/8

#2

5 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qc6?
      • threat
        • 2.Rc8#
      • 1...Bxc7
        • 2.Qxc7#
      • 1...Qb7
        • 2.Qxb7#
      • 1...Qxc6+!
  • Keys
    • 1.b7!
      • 1...Kxa7
        • 2.b8Q#
        • 2.b8B#
      • 1...Kxc7
        • 2.bxa8S#
      • 1...Qxb7
        • 2.Qxb7#
      • 1...Qxa7
        • 2.Rc8#
      • 1...Bxc7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • R1(E)
      • Vars
        • B(d);OGATE,XR(E)::QAB1(A),XB(d)
        • Q(b);N_GUARD::QAR1(A),XQ(b)
      • Refutation
        • Q(b);CHECK,XQ(A)
  • Actual
    • P(B);
    • Vars
      • K(c);OGATE,S_FLIGHT,XS(D)::P=Q
      • K(c);S_FLIGHT,XR(E)::PXQ(b)=S
      • Q(b);OGATE,P_SPINQ(b),XP(B)::QAR1(A),XQ(b)
      • Q(b);SBLOCK,XS(D)::R1(E)
      • B(d);SBLOCK,XR(E)::S(D)
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