MESON Chess Problem Database

Problem Display
PID: 119877 (6R1/5n2/2QNkB1r/8/K4PP1/8/8/8 w - - 0 1)

Lindgren, Frithiof

Stokholm Alm. Schachklub, 1917

6R1/5n2/2QNkB1r/8/K4PP1/8/8/8

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6
      • 2.Re8#
  • Keys
    • 1.Rf8!
      • threat
        • 2.Sxf7#
      • 1...Kxf6
        • 2.Sf5#
      • 1...Rxf6
        • 2.Re8#
      • 1...Sxd6
        • 2.f5#
      • 1...Se5
        • 2.f5#
      • 1...Sg5
        • 2.Sc4#
        • 2.Se4#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
        • 2.f5#
      • 1...Sd8
        • 2.f5#
      • 1...Sh8
        • 2.Sc4#
        • 2.Se4#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK,XB(F)::R(G)
  • Actual
    • R(G);
    • Threat
      • QAR(D)+S(E),XS(c)
    • Vars
      • K(a);P-FLIGHT,P_SPINS(c),XB(F)::QAR(D)+S(E)
      • R(b);SBLOCK,XB(F)::R(G)
      • S(c);P_SPINS(c),XS(E)::P(B)
      • S(c);::P(B)
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