MESON Chess Problem Database

Problem Display
PID: 23178 (8/3K4/7R/3k2n1/8/b1QB4/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/3K4/7R/3k2n1/8/b1QB4/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Rd6#
    • 1...Bb2
      • 2.Rd6#
    • 1...Bd6
      • 2.Rxd6#
  • Tries
    • 1.Bc4+?
      • 1...Kc5
        • 2.Rc6#
      • 1...Ke4!
    • 1.Re6?
      • threat
        • 2.Re5#
        • 2.Qe5#
        • 2.Qc4#
      • 1...Bb2
        • 2.Re5#
        • 2.Rd6#
        • 2.Qc4#
      • 1...Bd6
        • 2.Rxd6#
        • 2.Qc4#
      • 1...Sf3
        • 2.Be4#
        • 2.Qc4#
      • 1...Sf7
        • 2.Be4#
        • 2.Qc4#
      • 1...Sxe6!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Qd4#
      • 1...Bb2
        • 2.Qa5#
      • 1...Bc5
        • 2.Bc4#
      • 1...Sf3
        • 2.Be4#
      • 1...Se4
        • 2.Bxe4#
      • 1...Se6
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::R1(C)
    • B(a);N_GUARD::R1(C),XB(a)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • DUALS(3)
      • Refutation
        • S(c);XR(C)
  • Actual
    • R(C);
    • Threat
      • QAR1(A)
    • Vars
      • B(a);N_GUARD::QAR(A)
      • B(a);SBLOCK::B(B)
      • S(c);N_GUARD::B(B)
      • S(c);N_GUARD::B(B),XS(c)
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