MESON Chess Problem Database

Problem Display
PID: 208897 (r6B/4KPP1/1r4Bk/8/8/8/6R1/8 w - - 0 1)

Sloan, Charles H

Newark Sunday Call, 1876

r6B/4KPP1/1r4Bk/8/8/8/6R1/8

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.g8S#
    • 1...Ra2
      • 2.g8S#
    • 1...Ra3
      • 2.g8S#
    • 1...Ra4
      • 2.g8S#
    • 1...Ra5
      • 2.g8S#
    • 1...Ra6
      • 2.g8S#
    • 1...Rf8
      • 2.gxf8Q#
      • 2.gxf8B#
    • 1...Rg8
      • 2.fxg8S#
    • 1...Rxh8
      • 2.gxh8Q#
  • Keys
    • 1.g8S+!
      • 1...Rxg8
        • 2.fxg8S#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::P=S
    • R(c);N_GUARD,SBLOCK::P=S
    • R(c);OGATE::PXR(c)=Q
    • R(c);OGATE::PXR(c)=S
    • R(c);OGATE,XB(F)::PXR(c)=Q
  • Actual
    • P(E);CHECK
    • Vars
      • R(c);OGATE,XS(E)::PXR(c)=S
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