MESON Chess Problem Database

Problem Display
PID: 11919 (1K6/8/1p6/pkN5/8/2PR4/P1N1B3/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1973

1K6/8/1p6/pkN5/8/2PR4/P1N1B3/8

#2

7 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...Ka4
        • 2.Rd4#
      • 1...Kc4
        • 2.Sa3#
      • 1...Ka6
        • 2.Rd6#
      • 1...a4
        • 2.Rd6#
      • 1...Kc6!
    • 1.Sa4?
      • 1...Kxa4
        • 2.Rd4#
      • 1...Kc4
        • 2.Sa3#
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Ka6
        • 2.Rd6#
      • 1...Kc6!
    • 1.Se4?
      • 1...Ka4
        • 2.Rd4#
      • 1...Kc4
        • 2.Sa3#
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Ka6
        • 2.Rd6#
      • 1...Kc6
        • 2.Rd6#
      • 1...a4!
  • Keys
    • 1.Sb7!
      • 1...Ka4
        • 2.Rd4#
      • 1...Kc4
        • 2.Sa3#
      • 1...Ka6
        • 2.Rd6#
      • 1...Kc6
        • 2.Rd6#
      • 1...a4
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(b);S_FLIGHT::R(E)
        • K(b);S_FLIGHT::S(B)
        • K(b);S_FLIGHT::B(C)+R(E)
        • P(a);SBLOCK::B(C)+R(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(b);S_FLIGHT,XS(F)::R(E)
        • K(b);S_FLIGHT::B(C)+R(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(b);S_FLIGHT::R(E)
        • K(b);S_FLIGHT::B(C)+R(E)
        • K(b);S_FLIGHT::R1(E)
      • Refutation
        • P(a);
  • Actual
    • S(F);
    • Vars
      • K(b);S_FLIGHT::R(E)
      • K(b);S_FLIGHT::S(B)
      • K(b);S_FLIGHT::B(C)+R(E)
      • K(b);S_FLIGHT::R1(E)
      • P(a);SBLOCK::B(C)+R(E)
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