MESON Chess Problem Database

Problem Display
PID: 139249 (8/1KpN4/1pr1P2B/1N1k4/5RP1/2p4B/2P5/8 w - - 0 1)

Walters, S

The Problemist, 1937

8/1KpN4/1pr1P2B/1N1k4/5RP1/2p4B/2P5/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sxc7#
    • 1...Rxe6
      • 2.Rd4#
  • Tries
    • 1.Sxc7+?
      • 1...Kd6
        • 2.Bf8#
      • 1...Rxc7+!
  • Keys
    • 1.Re4!
      • 1...Kxe4
        • 2.Bg2#
      • 1...Rxe6
        • 2.Rd4#
      • 1...Rc4
        • 2.Re5#
      • 1...Rc5
        • 2.Sf6#
      • 1...Rd6
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,SBLOCK::S(E),XP(e)
    • R(d);SBLOCK,XP(F)::R1(C)
  • Tries
    • Try
      • S(E);CHECK,XP(e)
      • Vars
        • K(b);P-FLIGHT::B(G)
      • Refutation
        • R(d);CHECK,XS(E)
  • Actual
    • R(C);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(C)::B(B)
      • R(d);SBLOCK,XP(F)::R1(C)
      • R(d);SBLOCK::R1(C)
      • R(d);SBLOCK::S(I)
      • R(d);N_GUARD,SBLOCK::S(E),XP(a)
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