MESON Chess Problem Database

Problem Display
PID: 39766 (8/8/2p5/7Q/k7/p1P5/8/3K1B2 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/8/2p5/7Q/k7/p1P5/8/3K1B2

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qg4+?
      • 1...Ka5
        • 2.Qb4#
      • 1...Kb3!
    • 1.Qf7?
      • 1...Ka5
        • 2.Qa7#
      • 1...a2
        • 2.Qxa2#
      • 1...c5!
    • 1.Qh4+?
      • 1...Ka5
        • 2.Qb4#
      • 1...Kb3!
  • Keys
    • 1.Qe2!
      • 1...Kb3
        • 2.Qc2#
      • 1...Ka5
        • 2.Qa6#
      • 1...a2
        • 2.Qxa2#
      • 1...c5
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT::QAR2(D)
        • P(a);OGATEB::QAR2(D),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(b);S_FLIGHT::QAB1(D)
      • K(b);P-FLIGHT::QAR1(D)
      • P(a);OGATEB::QAR2(D),XP(a)
      • P(c);N_GUARD::QAB1(D)
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