MESON Chess Problem Database

Problem Display
PID: 23124 (Bb6/5p2/3Q4/5k1K/5P2/8/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

Bb6/5p2/3Q4/5k1K/5P2/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Qe5#
  • Tries
    • 1.Qd5+?
      • 1...Kxf4
        • 2.Qg5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Kf6!
    • 1.Qg6+?
      • 1...Kxf4
        • 2.Qg5#
      • 1...fxg6+!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxf7#
      • 1...Kxf4
        • 2.Qg5#
      • 1...Bxf4
        • 2.Be4#
      • 1...Be5
        • 2.Qxe5#
      • 1...f6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XP(A)::QAB1(C)
        • B(c);N_GUARD,P_SPINB(c)::QAR1(C),XB(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(A)::QAB1(C)
      • Refutation
        • P(b);CHECK,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XP(b)
    • Vars
      • K(a);P-FLIGHT,XP(A)::QAB1(C)
      • B(c);SBLOCK,XP(A)::B(D)
      • B(c);N_GUARD::QAR1(C),XB(c)
      • P(b);SBLOCK::QAB1(C)
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