MESON Chess Problem Database

Problem Display
PID: 207542 (8/4p3/2BrkpK1/4r3/4N3/4B3/4R3/8 w - - 0 1)

Chatto, James Thomas Chipperfield

Amateur Chess Magazine, 1872

8/4p3/2BrkpK1/4r3/4N3/4B3/4R3/8

#2

5 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Sg5#
  • Tries
    • 1.Sg5+?
      • 1...Rxg5+
        • 2.Bxg5#
      • 1...fxg5!
  • Keys
    • 1.Sc5+!
      • 1...Rxc5
        • 2.Bxc5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD,S_CUTR(a)::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • R(a);CHECK,OGATE,XS(C)::R(A)+B(B),XR(a)
      • Refutation
        • P(d);XS(C)
  • Actual
    • S(C);CHECK
    • Vars
      • R(a);OGATE,XS(C)::R(A)+B(B),XR(a)
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