MESON Chess Problem Database

Problem Display
PID: 81664 (2n5/8/b1P5/3kB3/2R1R3/b6Q/Pn4K1/8 w - - 0 1)

Allison, Christopher John

The Field, 1952

(First published on Sat May 24 1952)

2n5/8/b1P5/3kB3/2R1R3/b6Q/Pn4K1/8

#2

7 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Bxb2?
      • threat
        • 2.Qe6#
        • 2.Qd3#
      • 1...Kd6
        • 2.Qd7#
      • 1...Bxb2
        • 2.Qe6#
      • 1...Bc5
        • 2.Qe6#
      • 1...Bxc4!
    • 1.Qd7+?
      • 1...Bd6
        • 2.Qf7#
      • 1...Sd6!
    • 1.Qd3+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Sxd3!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qe6#
      • 1...Kxc4
        • 2.Qb3#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kd6
        • 2.Qd7#

This is after

After C Goldschmeding.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(F);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
        • B(b);XB(F)::QAB1(C)
        • B(b);::QAB1(C)
      • Refutation
        • B(d);XR(D)
    • Try
      • Q(C);CHECK
      • Vars
        • B(b);P_SPINB(b)::QAB(C)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • B(F);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(C)
      • K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(C)
      • K(c);P-FLIGHT::QAR1(C)
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