MESON Chess Problem Database

Problem Display
PID: 187165 (8/8/2NK4/8/B2B4/P2k4/3N4/5R2 w - - 0 1)

Kallio, Timo

Suomen Shakki, 1982

8/8/2NK4/8/B2B4/P2k4/3N4/5R2

#2

7 + 1

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sb1?
      • 1...Ke2
        • 2.Bb5#
      • 1...Ke4
        • 2.Bc2#
      • 1...Kc4!
    • 1.Sf3?
      • 1...Ke2
        • 2.Bb5#
      • 1...Kc4
        • 2.Sfe5#
        • 2.Sce5#
      • 1...Ke4!
    • 1.Se4?
      • 1...Ke2
        • 2.Bb5#
      • 1...Kxe4
        • 2.Bc2#
      • 1...Kc4!
  • Keys
    • 1.Sb3!
      • 1...Kc2
        • 2.Sb4#
      • 1...Ke2
        • 2.Bb5#
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Sc5#

Anticipated by 96986(1932), 39536(1933), 37982(1936)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::B(D)
        • K(a);S_FLIGHT,XS(B)::B(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT::B(D)
      • K(a);S_FLIGHT::S(B)
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