MESON Chess Problem Database

Problem Display
PID: 84669 (8/8/2K1pp2/7B/1pkp1Q2/1ppp4/8/8 w - - 0 1)

Fillery, William Edmund Frank

Canadian Chess Championship, 1983

8/8/2K1pp2/7B/1pkp1Q2/1ppp4/8/8

#2

3 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Be2#
    • 1...e5
      • 2.Bf7#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qb5#
        • 2.Qc5#
        • 2.Qxe6#
      • 1...b2
        • 2.Qxe6#
      • 1...c2
        • 2.Qc5#
      • 1...d2
        • 2.Qb5#
      • 1...fxe5!
    • 1.Qd6?
      • threat
        • 2.Qc5#
        • 2.Qxe6#
      • 1...b2
        • 2.Qxe6#
      • 1...c2
        • 2.Qc5#
      • 1...e5
        • 2.Bf7#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe6#
      • 1...d2!
    • 1.Qe4?
      • threat
        • 2.Qxe6#
      • 1...d2
        • 2.Be2#
      • 1...e5
        • 2.Bf7#
        • 2.Qd5#
      • 1...c2!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxe6#
        • 2.Qb5#
        • 2.Qc5#
      • 1...exf5
        • 2.Bf7#
      • 1...b2
        • 2.Qxe6#
      • 1...c2
        • 2.Qc5#
      • 1...d2
        • 2.Qb5#
      • 1...e5
        • 2.Bf7#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::B(B)
    • P(g);OGATEB::B(B)
  • Tries
    • Try
      • Q(A);N_PINP(f)
      • Threat
        • DUALS(3)
      • Vars
        • P(a);::QAB(A),XP(g)
        • P(b);::QAR1(A)
        • P(c);::QAB1(A)
      • Refutation
        • P(h);XQ(A)
    • Try
      • Q(A);N_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAB(A),XP(g)
        • P(b);::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(g)
      • Vars
        • P(c);OGATEB::B(B)
      • Refutation
        • P(b);
  • Actual
    • Q(A);N_PINP(f)
    • Threat
      • DUALS(3)
    • Vars
      • P(g);OGATEB,XQ(A)::B(B)
      • P(a);::QAB(A),XP(g)
      • P(b);::QAR1(A)
      • P(c);::QAB1(A)
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Developed and maintained by Brian Stephenson.
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