MESON Chess Problem Database

Problem Display
PID: 145516 (8/1k1N1p2/1B3P2/3K1B2/P1N5/8/8/8 w - - 0 1)

Lepage, Roger

L'Italia Scacchistica, 1973

8/1k1N1p2/1B3P2/3K1B2/P1N5/8/8/8

#2

7 + 2

274 diagrammes 1974
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Sc5#
    • 1...Kc8
      • 2.Sd6#
  • Tries
    • 1.Kd4?
      • 1...Ka6
        • 2.Sc5#
      • 1...Ka8
        • 2.Be4#
      • 1...Kc8
        • 2.Sd6#
      • 1...Kc6!
    • 1.Kc5?
      • 1...Ka8
        • 2.Be4#
      • 1...Kc8
        • 2.Sd6#
      • 1...Ka6!
    • 1.Kd6?
      • 1...Ka6
        • 2.Sc5#
      • 1...Ka8
        • 2.Be4#
      • 1...Kc8!
    • 1.Sd6+?
      • 1...Ka6
        • 2.Bd3#
      • 1...Ka8!
    • 1.Bh3?
      • 1...Ka6
        • 2.Sc5#
      • 1...Kc8
        • 2.Sd6#
      • 1...Ka8!
    • 1.Be4?
      • 1...Ka6
        • 2.Sc5#
      • 1...Ka8
        • 2.Kd4#
        • 2.Kc5#
        • 2.Ke5#
        • 2.Kd6#
      • 1...Kc8!
    • 1.Bg4?
      • 1...Ka6
        • 2.Sc5#
      • 1...Kc8
        • 2.Sd6#
      • 1...Ka8!
  • Keys
    • 1.Ke5!
      • 1...Ka6
        • 2.Sc5#
      • 1...Kc6
        • 2.Sa5#
      • 1...Ka8
        • 2.Be4#
      • 1...Kc8
        • 2.Sd6#

Anticipated by 17981(1952)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(G)
    • K(a);S_FLIGHT::S(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::B(D)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(D)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • K(a);S_FLIGHT::S(G)
      • K(a);S_FLIGHT::S(B)
      • K(a);S_FLIGHT::B(D)
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