MESON Chess Problem Database

Problem Display
PID: 23687 (8/8/p7/2K5/kP6/p7/Q7/3b4 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1986

8/8/p7/2K5/kP6/p7/Q7/3b4

#2

3 + 4

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Qxc2#
    • 1...Be2
      • 2.Qc2#
    • 1...Bf3
      • 2.Qc2#
    • 1...Bg4
      • 2.Qc2#
    • 1...Bh5
      • 2.Qc2#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qxd1#
      • 1...a2
        • 2.Qxa2#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Be2
        • 2.Qc2#
      • 1...Bf3
        • 2.Qc2#
      • 1...Bg4
        • 2.Qc2#
      • 1...Bh5
        • 2.Qc2#
      • 1...Bb3!
    • 1.Qd2?
      • threat
        • 2.Qxd1#
      • 1...a2
        • 2.Qxa2#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Be2
        • 2.Qc2#
      • 1...Bb3
        • 2.Qd7#
      • 1...Bf3
        • 2.Qc2#
      • 1...Bg4
        • 2.Qc2#
      • 1...Bh5
        • 2.Qc2#
      • 1...Kb3!
  • Keys
    • 1.Qc4!
      • 1...a2
        • 2.Qxa2#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Be2
        • 2.Qc2#
      • 1...Bb3
        • 2.Qxa6#
      • 1...Bf3
        • 2.Qc2#
      • 1...Bg4
        • 2.Qc2#
      • 1...Bh5
        • 2.Qc2#
      • 1...a5
        • 2.b5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB(A),XB(a)
    • B(a);N_GUARD::QAB(A)
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAB(A),XB(a)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • B(a);N_GUARD::QAB(A),XB(a)
        • B(a);N_GUARD::QAB(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAB(A),XB(a)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • B(a);N_GUARD::QAB(A),XB(a)
        • B(a);N_GUARD::QAB(A)
        • B(a);SBLOCK::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);N_PINP(b)
    • Vars
      • P(b);OGATEB::QAR2(A),XP(b)
      • B(a);N_GUARD::QAB(A),XB(a)
      • B(a);N_GUARD::QAB(A)
      • B(a);SBLOCK::QAR2(A),XP(d)
      • P(d);SBLOCK::QAR(A)+P(B)
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