MESON Chess Problem Database

Problem Display
PID: 23878 (8/3p4/1B6/2Q5/k7/8/K7/4bn2 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/3p4/1B6/2Q5/k7/8/K7/4bn2

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bf2
      • 2.Qc4#
      • 2.Qa5#
    • 1...Bg3
      • 2.Qc4#
      • 2.Qa5#
    • 1...Bh4
      • 2.Qc4#
      • 2.Qa5#
    • 1...Ba5
      • 2.Qxa5#
    • 1...Sd2
      • 2.Qa5#
  • Tries
    • 1.Qd4+?
      • 1...Bb4
        • 2.Qxd7#
      • 1...Kb5!
    • 1.Qc2+?
      • 1...Kb4
        • 2.Qb3#
      • 1...Kb5!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qb3#
      • 1...Kb4
        • 2.Qb3#
      • 1...Bb4
        • 2.Qxd7#
      • 1...Sd2
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR1(B),XB(a)
    • S(b);S_CUTB(a)::QAR1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);P_SPINB(a),SBLOCK::QAB(B),XP(d)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);P-FLIGHT::QAR1(B)
      • B(a);SBLOCK::QAB(B),XP(d)
      • S(b);S_CUTB(a)::QAR1(B)
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