MESON Chess Problem Database

Problem Display
PID: 203190 (3B1b2/6PP/3PP1kr/3PPp1R/4BrpK/5P2/6P1/NN6 w - f5 0 1)

Anderson, Gerald Frank

Western Daily Mercury, 1920

(First published on Fri Jul 9 1920)

3B1b2/6PP/3PP1kr/3PPp1R/4BrpK/5P2/6P1/NN6

#2

14 + 6

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.g8Q#
  • Tries
    • 1.Rxh6+?
      • 1...Kxg7
        • 2.h8Q#
      • 1...Kxh6!
  • Keys
    • 1.exf5 ep+!
      • 1...Rxe4
        • 2.gxf8S#
      • 1...Rf5
        • 2.Bxf5#
        • 2.gxf8S#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD,XP(J)::P=Q
  • Tries
    • Try
      • R(I);CHECK,N_SPINR(I),XR(e)
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT,XP(L)::P=Q
      • Refutation
        • K(d);N_SPINP(c),P-FLIGHT,XR(I)
  • Actual
    • P(H);CHECK,EP,XP(c)
    • Vars
      • R(a);N_GUARD,XB(E)::PXB(f)=S
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