MESON Chess Problem Database

Problem Display
PID: 69535 (8/7B/6R1/5N2/P3k3/1K1N4/2R5/8 w - - 0 1)

Anonymous

American Chess Journal, 0000

8/7B/6R1/5N2/P3k3/1K1N4/2R5/8

#2

7 + 1

285 The Chess Player's Chronicle (Staunton) 1877
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Re2+?
      • 1...Kf3
        • 2.Sd4#
        • 2.Re3#
      • 1...Kd5
        • 2.Bg8#
        • 2.Re5#
        • 2.Rd6#
      • 1...Kxf5
        • 2.Re5#
      • 1...Kxd3!
    • 1.Re6+?
      • 1...Kxd3
        • 2.Re3#
      • 1...Kd5
        • 2.Sf4#
        • 2.Re5#
      • 1...Kf3!
  • Keys
    • 1.Rg4+!
      • 1...Kxd3
        • 2.Rd4#
      • 1...Kf3
        • 2.Se5#
        • 2.Rf4#
      • 1...Kd5
        • 2.Bg8#

This anticipates 174970(1901)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(E)::R1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • R(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(C)::R1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(F);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT,XS(C)::R1(F)
      • K(a);S_FLIGHT::B(G)
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