MESON Chess Problem Database

Problem Display
PID: 71607 (8/8/1pQ5/2p2n2/p1k5/P3P3/1P3K2/1B6 w - - 0 1)

Chernet, R

diagrammes, 1986

8/8/1pQ5/2p2n2/p1k5/P3P3/1P3K2/1B6

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qb5#
    • 1...b5
      • 2.Qe6#
  • Tries
    • 1.Be4?
      • threat
        • 2.Qxa4#
      • 1...b5
        • 2.Qd5#
        • 2.Qe6#
      • 1...Kb3!
    • 1.Bxf5?
      • 1...b5
        • 2.Qe6#
      • 1...Kb3!
  • Keys
    • 1.e4!
      • threat
        • 2.Qxa4#
      • 1...Kb3
        • 2.Qb5#
      • 1...Kd4
        • 2.Qd5#
      • 1...b5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),S_FLIGHT::QAR2(F)
    • P(e);SBLOCK::QAB(F)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR2(F),XP(a)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • B(A);XS(d)
      • Vars
        • P(e);SBLOCK::QAB(F)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
  • Actual
    • P(E);
    • Threat
      • QAR2(F),XP(a)
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT::QAR2(F)
      • K(b);N_SPINP(c),P-FLIGHT::QAR1(F)
      • P(e);SBLOCK::QAB1(F)
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