MESON Chess Problem Database

Problem Display
PID: 257649 (8/2p5/3kPK2/P7/P3Q3/8/2p5/2B5 w - - 0 1)

Hersom, Donald H

British Chess Magazine, 1934

8/2p5/3kPK2/P7/P3Q3/8/2p5/2B5

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Ba3#
    • 1...c5
      • 2.Bf4#
    • 1...c6
      • 2.Qe5#
  • Tries
    • 1.Kf7?
      • 1...Kc5
        • 2.Ba3#
      • 1...c5
        • 2.Bf4#
      • 1...c6!
    • 1.a6?
      • 1...c6
        • 2.Qe5#
      • 1...c5
        • 2.Bf4#
      • 1...Kc5!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Bf8#
      • 1...Kc5
        • 2.Bf8#
      • 1...c6
        • 2.Qe5#
      • 1...c5
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_CUTP(c),S_FLIGHT::B(A)
    • P(c);SBLOCK::B(A)
    • P(c);SBLOCK::QAB1(C)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);S_CUTP(c),S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
    • Try
      • P(D);
      • Vars
        • P(c);SBLOCK::QAB1(C)
        • P(c);SBLOCK::B(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(A);
    • Threat
      • B(A)
    • Vars
      • K(b);S_FLIGHT::B(A)
      • P(c);SBLOCK::QAB1(C)
      • P(c);SBLOCK::B(A)
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