MESON Chess Problem Database

Problem Display
PID: 22345 (R7/8/8/1N6/8/1p6/1BR1K3/1k6 w - - 0 1)

Charlin, A

Australian Chess, 0000

R7/8/8/1N6/8/1p6/1BR1K3/1k6

#2

5 + 2

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Rb8?
      • 1...Ka2
        • 2.Sc3#
      • 1...bxc2
        • 2.Sc3#
      • 1...Kxc2!
    • 1.Rac8?
      • 1...Ka2
        • 2.Sc3#
      • 1...bxc2!
  • Keys
    • 1.Ra2!
      • 1...Kxa2
        • 2.Sc3#
      • 1...Kxc2
        • 2.Sa3#
      • 1...bxa2
        • 2.Sa3#
      • 1...bxc2
        • 2.Sc3#

This anticipates 16901(1944)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::S(D)
        • P(b);SBLOCK,XR(B)::S(D)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::S(D)
      • Refutation
        • P(b);XR(B)
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT,XR(E)::S(D)
      • K(a);S_FLIGHT,XR(B)::S(D)
      • P(b);SBLOCK,XR(E)::S(D)
      • P(b);SBLOCK,XR(B)::S(D)
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