MESON Chess Problem Database

Problem Display
PID: 234713 (4k3/2K1P2Q/6n1/7b/8/6B1/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2013

4k3/2K1P2Q/6n1/7b/8/6B1/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kd6?
      • 1...Sxe7
        • 2.Qxe7#
      • 1...Bd1
        • 2.Qxg6#
      • 1...Be2
        • 2.Qxg6#
      • 1...Bf3
        • 2.Qxg6#
      • 1...Bg4
        • 2.Qxg6#
      • 1...Sf4
        • 2.Qg8#
      • 1...Sh4
        • 2.Qg8#
      • 1...Se5
        • 2.Qg8#
      • 1...Sh8
        • 2.Qg8#
      • 1...Sf8!
    • 1.Qxg6+?
      • 1...Kxe7
        • 2.Bd6#
      • 1...Bxg6!
    • 1.Qg8+?
      • 1...Sf8
        • 2.Qxf8#
        • 2.exf8Q#
      • 1...Kxe7!
  • Keys
    • 1.Bd6!
      • 1...Sxe7
        • 2.Qxe7#
      • 1...Bd1
        • 2.Qxg6#
      • 1...Be2
        • 2.Qxg6#
      • 1...Bf3
        • 2.Qxg6#
      • 1...Bg4
        • 2.Qxg6#
      • 1...Sf4
        • 2.Qg8#
      • 1...Sh4
        • 2.Qg8#
      • 1...Se5
        • 2.Qg8#
      • 1...Sf8
        • 2.exf8Q#
        • 2.exf8R#
      • 1...Sh8
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(b);OGATE,XP(C)::QAR1(D),XS(b)
        • B(a);N_GUARD::QAB(D),XS(b)
        • S(b);N_GUARD::QAR2(D)
      • Refutation
        • S(b);
    • Try
      • Q(D);CHECK,XS(b)
      • Vars
        • K(c);P-FLIGHT,XP(C)::B(A)
      • Refutation
        • B(a);XQ(D)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(c);P-FLIGHT,XP(C)
  • Actual
    • B(A);
    • Vars
      • S(b);OGATE,XP(C)::QAR1(D),XS(b)
      • B(a);N_GUARD::QAB(D),XS(b)
      • S(b);N_GUARD::QAR2(D)
      • S(b);OGATE::PXS(b)=Q
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