MESON Chess Problem Database

Problem Display
PID: 15783 (8/5K2/pp6/8/kBB4Q/bR6/8/8 w - - 0 1)

Shire, David J

The Problemist, 1987

8/5K2/pp6/8/kBB4Q/bR6/8/8

#2

5 + 4

3310 2345 Chess Problems 1997
3256 David Shire Selected Chess Problems 2001
133 The Problemist Supplement 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Bd5?
      • 1...Bxb4
        • 2.Qxb4#
      • 1...Bc1
        • 2.Bd2#
      • 1...Bb2
        • 2.Bc3#
      • 1...a5
        • 2.Bxa3#
      • 1...b5
        • 2.Rxa3#
      • 1...Kb5!
  • Keys
    • 1.Be6!
      • 1...Kb5
        • 2.Bd7#
      • 1...Bxb4
        • 2.Qxb4#
      • 1...Bc1
        • 2.Bd2#
      • 1...Bb2
        • 2.Bc3#
      • 1...a5
        • 2.Bxa3#
      • 1...b5
        • 2.Rxa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • B(a);OGATE,P_SPINB(a),XB(B)::QAR1(D),XB(a)
        • B(a);N_GUARD::QAR(D)+B(B)
        • P(c);SBLOCK::QAR(D)+B(B),XB(a)
        • P(d);SBLOCK::R1(A),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(b);S_FLIGHT::B(C)
      • B(a);OGATE,P_SPINB(a),XB(B)::QAR1(D),XB(a)
      • B(a);N_GUARD::QAR(D)+B(B)
      • P(c);SBLOCK::QAR(D)+B(B),XB(a)
      • P(d);SBLOCK::R1(A),XB(a)
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