MESON Chess Problem Database

Problem Display
PID: 65258 (4B3/4R2n/3K4/5k2/2R5/4B3/8/8 w - - 0 1)

Lincoln, Robert A

Comm., Amirov MT, 2004

4B3/4R2n/3K4/5k2/2R5/4B3/8/8

#2

5 + 2

145 StrateGems 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Rf4#
    • 1...Sf6
      • 2.Re5#
  • Tries
    • 1.Bh6?
      • threat
        • 2.Rf4#
      • 1...Kf6
        • 2.Rf4#
      • 1...Sg5!
    • 1.Rc5+?
      • 1...Kf6
        • 2.Bd4#
      • 1...Kg4!
    • 1.Re6?
      • threat
        • 2.Bg6#
      • 1...Sf6
        • 2.Re5#
      • 1...Sf8!
  • Keys
    • 1.Bh5!
      • 1...Kf6
        • 2.Rf7#
      • 1...Sf6
        • 2.Re5#
      • 1...Sg5
        • 2.Rf4#
      • 1...Sf8
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(B)
    • S(b);SBLOCK::R1(D)
  • Tries
    • Try
      • B(A);
      • Threat
        • R1(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • S(b);
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • B(E)
      • Vars
        • S(b);SBLOCK::R1(D)
      • Refutation
        • S(b);
  • Actual
    • B(E);
    • Vars
      • K(a);P-FLIGHT::R1(D)
      • S(b);SBLOCK::R1(D)
      • S(b);SBLOCK::R1(B)
      • S(b);N_GUARD::R(D)
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