MESON Chess Problem Database

Problem Display
PID: 119922 (2n3q1/1Q6/1p3br1/3Np1p1/4k3/4N1P1/BP4P1/4K3 w - - 0 1)

Collijn, L

Stockholm Almane Schachklub, 1917

2n3q1/1Q6/1p3br1/3Np1p1/4k3/4N1P1/BP4P1/4K3

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...Kd3
        • 2.Qe4#
      • 1...Kxe3
        • 2.Qe4#
      • 1...Kd4!
    • 1.Sxf6+?
      • 1...Kd3
        • 2.Qe4#
      • 1...Kxe3
        • 2.Qe4#
      • 1...Kd4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Bb1#
      • 1...Kd3
        • 2.Sb4#
      • 1...Kxf5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(H)
        • K(a);P-FLIGHT,XS(E)::QAR1(H)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(G);CHECK,XB(e)
      • Vars
        • K(a);S_FLIGHT::QAB1(H)
        • K(a);P-FLIGHT,XS(E)::QAR1(H)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • B(B)
    • Vars
      • K(a);S_FLIGHT::S(G)
      • K(a);S_FLIGHT,XS(E)::S(G)
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