MESON Chess Problem Database

Problem Display
PID: 178750 (4R3/8/6kN/4B3/6B1/8/8/4K3 w - - 0 1)

Froberg, Johan Hilding Laurentius

Springaren, 1960

4R3/8/6kN/4B3/6B1/8/8/4K3

#2

5 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • 1...Kg5
        • 2.Rg8#
      • 1...Kf7
        • 2.Bh5#
      • 1...Kh7!
    • 1.Sg8?
      • 1...Kf7
        • 2.Bh5#
      • 1...Kh7
        • 2.Bf5#
      • 1...Kg5!
    • 1.Re6+?
      • 1...Kh7
        • 2.Bf5#
      • 1...Kg5!
  • Keys
    • 1.Sf7!
      • 1...Kxf7
        • 2.Bh5#
      • 1...Kh7
        • 2.Bf5#

Anticipated by 207026(1862), 108837(1926), 6185(1927), 207089(1951)

This anticipates 69344(1968), 12478(1979), 221072(1998), 217467(1999)

FEATURES

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