MESON Chess Problem Database

Problem Display
PID: 23120 (8/8/6p1/4Qp1b/8/5k2/8/4BK2 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/8/6p1/4Qp1b/8/5k2/8/4BK2

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Qg3#
    • 1...f4
      • 2.Qe2#
  • Tries
    • 1.Qe3+?
      • 1...Kg4
        • 2.Qg3#
      • 1...Kxe3!
  • Keys
    • 1.Bf2!
      • 1...Kg4
        • 2.Qg3#
      • 1...Bg4
        • 2.Qe3#
      • 1...f4
        • 2.Qe2#
      • 1...g5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(C)
    • P(b);SBLOCK::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • B(c);SBLOCK::QAR1(C)
      • P(b);SBLOCK::QAB1(C)
      • P(d);N_GUARD::QAR2(C),XP(b)
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