MESON Chess Problem Database

Problem Display
PID: 7969 (8/8/8/BQ6/n7/8/b1k5/4R1K1 w - - 0 1)

Lincoln, Robert A

Atlantic Chess News, 1995

8/8/8/BQ6/n7/8/b1k5/4R1K1

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb1#
    • 1...Bb3
      • 2.Qe2#
    • 1...Bc4
      • 2.Qb1#
    • 1...Bd5
      • 2.Qb1#
    • 1...Be6
      • 2.Qb1#
    • 1...Bf7
      • 2.Qb1#
    • 1...Bg8
      • 2.Qb1#
  • Keys
    • 1.Qb4!
      • 1...Kd3
        • 2.Qe4#
      • 1...Bb3
        • 2.Qd2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb2
        • 2.Qc3#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Bc4
        • 2.Qb1#
      • 1...Bd5
        • 2.Qb1#
      • 1...Be6
        • 2.Qb1#
      • 1...Bf7
        • 2.Qb1#
      • 1...Bg8
        • 2.Qb1#
      • 1...Sc5
        • 2.Qc3#
      • 1...Sb6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB1(D),XB(a)
    • B(a);SBLOCK::QAR2(D)
    • B(a);N_GUARD::QAB1(D)
  • Actual
    • Q(D);
    • Vars
      • K(b);S_FLIGHT::QAB1(D)
      • B(a);SBLOCK::QAR1(D)
      • S(c);N_GUARD::QAR1(D),XS(c)
      • S(c);N_GUARD::QAR1(D)
      • B(a);N_GUARD::QAB1(D),XB(a)
      • B(a);N_GUARD::QAB1(D)
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