MESON Chess Problem Database

Problem Display
PID: 185735 (2B5/5p2/3Npk1K/8/2PR4/2B1P3/8/8 w - - 0 1)

Hirst, B

Chess, 1957

2B5/5p2/3Npk1K/8/2PR4/2B1P3/8/8

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rd1#
      • 2.Rd2#
      • 2.Rd3#
      • 2.Rd5#
  • Tries
    • 1.Se8+?
      • 1...Ke5
        • 2.Rf4#
      • 1...Kf5
        • 2.Rf4#
      • 1...Ke7!
  • Keys
    • 1.Sf5!
      • 1...Ke5
        • 2.Rf4#
      • 1...Kxf5
        • 2.Rf4#
      • 1...exf5
        • 2.Re4#
      • 1...e5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A)+R(D)
        • K(b);P-FLIGHT,P_SPINP(a)::R1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(b);S_FLIGHT::B(A)+R(D)
      • K(b);P-FLIGHT,P_SPINP(a),XS(E)::R1(D)
      • P(a);N_GUARD,XS(E)::B(A)+R(D)
      • P(a);::R(D)
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