MESON Chess Problem Database

Problem Display
PID: 11313 (7B/8/R1pN4/1b1k4/2N5/P3PP1B/3K4/6b1 w - - 0 1)

Barnes, T Hermans

Chess, 1938

7B/8/R1pN4/1b1k4/2N5/P3PP1B/3K4/6b1

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.e4#
  • Tries
    • 1.Sb6+?
      • 1...Kc5
        • 2.Se4#
        • 2.Sb7#
      • 1...Kxd6!
    • 1.Se4?
      • threat
        • 2.Sb6#
      • 1...Bxe3+
        • 2.Sxe3#
      • 1...Kxc4
        • 2.Be6#
      • 1...c5
        • 2.Be6#
      • 1...Bxc4!
    • 1.Be6+?
      • 1...Kc5
        • 2.Se4#
        • 2.Sb7#
        • 2.Bd4#
      • 1...Kxe6!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sb6#
      • 1...Bxe3+
        • 2.Sxe3#
      • 1...Kxc4
        • 2.Be6#
      • 1...Bxc4
        • 2.e4#
      • 1...c5
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::P(C)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(c);P-FLIGHT,XS(H)
    • Try
      • S(H);
      • Threat
        • S(F)
      • Vars
        • B(a);CHECK,XP(C)::S(F),XB(a)
        • K(c);S_FLIGHT,XS(F)::B(E)
        • P(d);::B(E)
      • Refutation
        • B(b);XS(F)
    • Try
      • B(E);CHECK
      • Refutation
        • K(c);S_FLIGHT,XB(E)
  • Actual
    • S(H);
    • Threat
      • S(F)
    • Vars
      • B(a);CHECK,XP(C)::S(F),XB(a)
      • K(c);S_FLIGHT,XS(F)::B(E)
      • B(b);SBLOCK,XS(F)::P(C)
      • P(d);::B(E)
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