MESON Chess Problem Database

Problem Display
PID: 51216 (8/5b1B/4p1pR/5kp1/8/5P2/1Q3K2/2B5 w - - 0 1)

Nicholson, JR

Manchester Guardian, 1954

8/5b1B/4p1pR/5kp1/8/5P2/1Q3K2/2B5

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bg8
      • 2.Bxg6#
    • 1...g4
      • 2.Rh5#
  • Tries
    • 1.Qg7?
      • 1...e5
        • 2.Qxf7#
      • 1...Bg8
        • 2.Bxg6#
      • 1...g4
        • 2.Rh5#
      • 1...Be8!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qf6#
      • 1...gxf4
        • 2.Rh5#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD::B(F),XP(d)
    • P(b);OGATEB::R(E)
  • Tries
    • Try
      • Q(B);
      • Vars
        • P(c);SBLOCK::QAR2(B),XB(e)
        • B(e);N_GUARD::B(F),XP(d)
        • P(b);OGATEB::R(E)
      • Refutation
        • B(e);
  • Actual
    • B(A);
    • Threat
      • QAR1(B)
    • Vars
      • K(a);N_SPINP(d),P-FLIGHT,XB(A)::QAR2(B)
      • P(b);OGATEB,SBLOCK,XB(A)::R(E)
      • P(c);::QAR1(B),XP(c)
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