MESON Chess Problem Database

Problem Display
PID: 23123 (2b5/8/3Q4/1k6/1P6/1B6/1K6/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

2b5/8/3Q4/1k6/1P6/1B6/1K6/8

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qc5#
  • Tries
    • 1.Qb8+?
      • 1...Ka6
        • 2.Bc4#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Kc6!
    • 1.Qc6+?
      • 1...Kxb4
        • 2.Qb6#
      • 1...Kxc6!
  • Keys
    • 1.Qc7!
      • 1...Kxb4
        • 2.Qb6#
      • 1...Ka6
        • 2.Bc4#
      • 1...Bh3
        • 2.Qb7#
      • 1...Bg4
        • 2.Qb7#
      • 1...Bf5
        • 2.Qb7#
      • 1...Ba6
        • 2.Qc5#
      • 1...Be6
        • 2.Qb7#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Bd7
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAR1(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::B(B)
        • B(b);N_GUARD,P_SPINB(b)::QAR2(D),XB(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(C)::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT,XP(C)::QAR2(D)
      • K(a);S_FLIGHT::B(B)
      • B(b);N_GUARD::QAR2(D)
      • B(b);SBLOCK::QAR1(D)
      • B(b);N_GUARD::QAR2(D),XB(b)
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