MESON Chess Problem Database

Problem Display
PID: 47726 (8/QK6/8/bk6/8/P7/1P1N4/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/QK6/8/bk6/8/P7/1P1N4/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.a4#
  • Tries
    • 1.Qc5+?
      • 1...Ka4
        • 2.Qc6#
        • 2.b3#
      • 1...Kxc5!
    • 1.Qb6+?
      • 1...Ka4
        • 2.Qb3#
        • 2.Qc6#
      • 1...Bxb6!
    • 1.Qa6+?
      • 1...Ka4
        • 2.Qc6#
      • 1...Kc5!
    • 1.a4+?
      • 1...Kb4
        • 2.Qd4#
      • 1...Kxa4!
  • Keys
    • 1.b4!
      • threat
        • 2.Qxa5#
      • 1...Ka4
        • 2.Qxa5#
      • 1...Bxb4
        • 2.a4#
      • 1...Bb6
        • 2.Qa6#
      • 1...Bc7
        • 2.Qa6#
      • 1...Bd8
        • 2.Qa6#

FEATURES

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