MESON Chess Problem Database

Problem Display
PID: 24138 (4k1K1/2Qpp3/8/b7/7B/8/8/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

4k1K1/2Qpp3/8/b7/7B/8/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qb8#
      • 2.Qc8#
    • 1...Bd2
      • 2.Qb8#
      • 2.Qc8#
    • 1...Bc3
      • 2.Qb8#
      • 2.Qc8#
    • 1...Bb4
      • 2.Qb8#
      • 2.Qc8#
    • 1...d5
      • 2.Qxe7#
    • 1...d6
      • 2.Qxe7#
    • 1...e5
      • 2.Qxe5#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qb8#
      • 1...Bb4
        • 2.Qb8#
      • 1...Bd8
        • 2.Qg6#
      • 1...e5
        • 2.Qxe5#
        • 2.Qe7#
        • 2.Qf8#
        • 2.Qg6#
      • 1...e6
        • 2.Qe7#
        • 2.Qf8#
      • 1...exd6!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qb8#
      • 1...Bb4
        • 2.Qb8#
      • 1...Bd8
        • 2.Qh5#
      • 1...e6
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • P(b);OGATE::QAR1(B),XP(c)
    • P(c);OGATEB::QAR(B),XP(c)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(c)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(b)::QAR2(B)
        • B(a);N_GUARD::QAR(B)
        • B(a);SBLOCK::QAB(B)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • Q(B);P_PINP(c)
    • Threat
      • QAR1(B),XP(c)
    • Vars
      • K(d);P-FLIGHT::QAR2(B)
      • B(a);N_GUARD::QAR(B)
      • B(a);SBLOCK::QAB(B)
      • P(c);::QAB(B)
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