MESON Chess Problem Database

Problem Display
PID: 258556 (1n1r4/2Nkp3/PP1N4/3B4/K2Q4/8/8/8 w - - 0 1)

Vissa, Horia

Buletin Problemistic, 1987

1n1r4/2Nkp3/PP1N4/3B4/K2Q4/8/8/8

#2

7 + 4

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Bh1#
      • 2.Bg2#
      • 2.Bf3#
      • 2.Be4#
      • 2.Bb7#
      • 2.Ba8#
    • 1...Sc6
      • 2.Be6#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Bb7#
      • 1...Kc8
        • 2.Bb7#
      • 1...Sc6
        • 2.Be6#
      • 1...e5!
    • 1.Qg4+?
      • 1...e6
        • 2.Qxe6#
      • 1...Kxd6!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Bb7#
      • 1...Kxc8
        • 2.Bb7#
      • 1...Sc6
        • 2.Be6#
      • 1...e5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR(B)+B(C)
      • Vars
        • K(a);S_FLIGHT::B(C)
        • S(c);SBLOCK::QAR(B)+B(C),DCHECK
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(B),XP(b)
      • Refutation
        • K(a);P-FLIGHT,XS(F)
  • Actual
    • S(F);
    • Threat
      • QAR(B)+B(C)
    • Vars
      • K(a);S_FLIGHT,XS(F)::B(C)
      • S(c);SBLOCK::QAR(B)+B(C),DCHECK
      • P(b);N_GUARD::QAB(B)
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