MESON Chess Problem Database

Problem Display
PID: 247568 (r1k1B1NQ/q1P2R2/4pK2/1R6/3p4/p7/8/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Zadachi i Etyudi, 2003

r1k1B1NQ/q1P2R2/4pK2/1R6/3p4/p7/8/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qh3#
  • Tries
    • 1.Sh6?
      • threat
        • 2.Bc6#
      • 1...Qxc7
        • 2.Bd7#
      • 1...Qc5!
    • 1.Qh2?
      • threat
        • 2.Se7#
        • 2.Bd7#
      • 1...Qxc7
        • 2.Qxc7#
      • 1...Qc5
        • 2.Bd7#
      • 1...e5
        • 2.Qh3#
      • 1...Qb6!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Sh6#
      • 1...Qxc7
        • 2.Se7#
      • 1...Qc5
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::QAB(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR(G)+B(E)
      • Vars
        • Q(d);SBLOCK,XP(C)::QAR(G)+B(E),DCHECK
      • Refutation
        • Q(d);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);OGATE,XP(C)::QAR1(G),XQ(d)
        • Q(d);::B(E)
        • P(c);OGATEB::QAB(G)
      • Refutation
        • Q(d);
  • Actual
    • B(E);
    • Threat
      • QAR(G)+S(F)
    • Vars
      • Q(d);SBLOCK,XP(C)::QAR(G)+S(F),DCHECK
      • Q(d);N_GUARD::B(E)
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