MESON Chess Problem Database

Problem Display
PID: 199345 (8/5pK1/4p3/1Q3N1k/2P2Pp1/5p2/8/8 w - - 0 1)

Bryukhanov, Ivan Oleksandrovich

Freie Presse, 2001

(First published on Fri Jul 20 2001)

8/5pK1/4p3/1Q3N1k/2P2Pp1/5p2/8/8

#2

5 + 5

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...f6
      • 2.Qe8#
  • Tries
    • 1.Qe8?
      • threat
        • 2.Qxf7#
        • 2.Qh8#
      • 1...exf5
        • 2.Qh8#
      • 1...g3!
    • 1.Qb7?
      • threat
        • 2.Qxf7#
      • 1...g3
        • 2.Qxf3#
      • 1...f6
        • 2.Qf7#
      • 1...exf5!
  • Keys
    • 1.Qc6!
      • 1...exf5
        • 2.Qh6#
      • 1...g3
        • 2.Qxf3#
      • 1...e5
        • 2.Qh6#
      • 1...f2
        • 2.Qh1#
      • 1...f6
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATEB::QAB(C)
  • Tries
    • Try
      • Q(C);P_PINP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);XS(D)::QAR(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAB(C),XP(e)
      • Vars
        • P(b);OGATEB::QAB(C),XP(a)
        • P(e);::QAB(C)
      • Refutation
        • P(d);XS(D)
  • Actual
    • Q(C);
    • Vars
      • P(d);OGATE,XS(D)::QAR1(C)
      • P(b);OGATEB::QAB(C),XP(a)
      • P(d);OGATE::QAR1(C)
      • P(a);OGATE::QAR(C)
      • P(e);OGATEB::QAB(C)
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