MESON Chess Problem Database

Problem Display
PID: 76626 (4K1Nk/3Q1RbP/8/8/8/8/8/8 w - - 0 1)

Cafferata, Louis William

The Tablet, 1940

(First published on Sat Feb 17 1940)

4K1Nk/3Q1RbP/8/8/8/8/8/8

#2

5 + 2

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qxd4#
  • Tries
    • 1.Sf6?
      • 1...Bxf6
        • 2.Rf8#
      • 1...Bf8
        • 2.Rxf8#
      • 1...Bh6!
    • 1.Qd4?
      • threat
        • 2.Qxg7#
      • 1...Kxh7
        • 2.Qxg7#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bxd4!
  • Keys
    • 1.Se7!
      • 1...Kxh7
        • 2.Qh3#
      • 1...Ba1
        • 2.Sg6#
      • 1...Bb2
        • 2.Sg6#
      • 1...Bc3
        • 2.Sg6#
      • 1...Bd4
        • 2.Sg6#
        • 2.Qxd4#
      • 1...Be5
        • 2.Sg6#
      • 1...Bf6
        • 2.Sg6#
      • 1...Bh6
        • 2.Sg6#
      • 1...Bf8
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATEB::QAB(A),XB(a)
  • Tries
    • Try
      • S(E);
      • Vars
        • B(a);N_GUARD,XS(E)::R(B)
        • B(a);N_GUARD::R(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(A);P_PINB(a)
      • Threat
        • QAB1(A),XB(a)
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(A),XB(a)
        • B(a);OGATEB::QAB(A),XB(a)
      • Refutation
        • B(a);N_SPINB(a),XQ(A)
  • Actual
    • S(E);
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINB(a),XP(C)::QAR(A)
      • B(a);::S(E)
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