MESON Chess Problem Database

Problem Display
PID: 80964 (1K6/2B1p3/2k1p3/1pbp4/3R4/2Q5/2B5/8 w - - 0 1)

Wigan, TK

The Field, 1950

(First published on Sat Jul 22 1950)

1K6/2B1p3/2k1p3/1pbp4/3R4/2Q5/2B5/8

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Ba4#
  • Tries
    • 1.Kc8?
      • 1...b4
        • 2.Ba4#
      • 1...e5!
    • 1.Qxc5+?
      • 1...Kd7
        • 2.Qxb5#
      • 1...Kxc5!
  • Keys
    • 1.Qc4!
      • 1...Kd7
        • 2.Qxb5#
      • 1...bxc4
        • 2.Ba4#
      • 1...dxc4
        • 2.Be4#
      • 1...e5
        • 2.Qxd5#
      • 1...b4
        • 2.Ba4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::B(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • P(a);OGATEB::B(A)
      • Refutation
        • P(e);
    • Try
      • Q(B);CHECK,XB(b)
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT::QAB(B),XP(a)
      • Refutation
        • K(d);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(d);N_SPINB(b),P_SPINP(c),S_FLIGHT::QAB(B),XP(a)
      • P(a);N_SPINB(b),OGATEB,XQ(B)::B(A)
      • P(c);N_SPINB(b),OGATEB,XQ(B)::B(A)
      • P(e);N_GUARD::QAB1(B),XP(c)
      • P(a);OGATEB::B(A)
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