MESON Chess Problem Database

Problem Display
PID: 45898 (3B4/8/8/1p6/8/3bQ3/1K6/2nk4 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

3B4/8/8/1p6/8/3bQ3/1K6/2nk4

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Qxc1#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Qd2#
        • 2.Qe1#
      • 1...Be2
        • 2.Qxc1#
        • 2.Qd2#
      • 1...Se2
        • 2.Qd2#
        • 2.Qxd3#
      • 1...Sb3
        • 2.Qe1#
      • 1...b4!
    • 1.Qxd3+?
      • 1...Ke1
        • 2.Bh4#
      • 1...Sxd3+!
  • Keys
    • 1.Bh4!
      • threat
        • 2.Qe1#
      • 1...Be2
        • 2.Qxc1#
      • 1...Se2
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAR1(B),XS(a)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • Q(B);CHECK,XB(c)
      • Vars
        • K(b);P-FLIGHT::B(C)
      • Refutation
        • S(a);CHECK,XQ(B)
  • Actual
    • B(C);
    • Threat
      • QAR1(B)
    • Vars
      • B(c);SBLOCK::QAR1(B),XS(a)
      • S(a);N_GUARD::QAR2(B),XB(c)
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