MESON Chess Problem Database

Problem Display
PID: 234133 (rk1B1K2/bb1BN3/1n6/2N5/8/8/8/8 w - - 0 1)

Keeney, Palmer Gunkel

Chess Life, 1948

rk1B1K2/bb1BN3/1n6/2N5/8/8/8/8

#2

5 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Sc6#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Bc8
      • 2.Sc6#
    • 1...Sxd7+
      • 2.Sxd7#
  • Keys
    • 1.Bc8!
      • 1...Sd7+
        • 2.Sxd7#
      • 1...Bxc8
        • 2.Sc6#
      • 1...Sxc8
        • 2.Sd7#
      • 1...Bh1
        • 2.Sa6#
      • 1...Bg2
        • 2.Sa6#
      • 1...Bf3
        • 2.Sa6#
      • 1...Be4
        • 2.Sa6#
      • 1...Bd5
        • 2.Sa6#
      • 1...Ba6
        • 2.Sxa6#
      • 1...Bc6
        • 2.Sa6#
      • 1...Sa4
        • 2.Sd7#
      • 1...Sc4
        • 2.Sd7#
      • 1...Sd5
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::S(C)
    • B(c);N_GUARD::S(C),XB(c)
    • S(a);CHECK,XB(B)::S(A),XS(a)
  • Actual
    • B(B);
    • Vars
      • S(a);CHECK,N_GUARD::S(A),XS(a)
      • B(c);N_GUARD,SBLOCK,XB(B)::S(C)
      • S(a);N_GUARD,XB(B)::S(A)
      • B(c);N_GUARD::S(A)
      • B(c);N_GUARD::S(A),XB(c)
      • S(a);N_GUARD::S(A)
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