MESON Chess Problem Database

Problem Display
PID: 143362 (B3R3/4rp2/1N2b1pN/2P1kpQ1/3rP1PR/2n1P3/4n1K1/B7 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

6th Prize, DSK 17. TT, 1939-1940

B3R3/4rp2/1N2b1pN/2P1kpQ1/3rP1PR/2n1P3/4n1K1/B7

#2

12 + 9

259 Thema Danicum 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4+
      • 2.exf4#
  • Keys
    • 1.gxf5!
      • threat
        • 2.Sg4#
      • 1...Sf4+
        • 2.exf4#
      • 1...Rxe4
        • 2.Rxe4#
      • 1...Bxf5
        • 2.Rxe7#
      • 1...Rd5
        • 2.Sc4#
      • 1...Rb7
        • 2.f6#
      • 1...Bd5
        • 2.Sd7#
      • 1...Sd5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(a);CHECK,OGATE::P(C),XS(a)
  • Actual
    • P(E);XP(e)
    • Threat
      • S(J)
    • Vars
      • S(a);CHECK,OGATE::P(C),XS(a)
      • R(c);OGATE,P_SPINS(b),XP(D)::R1(F),XR(c)
      • B(f);OGATEB,P_SPINB(f),P_SPINR(h),XP(E)::R(L),XR(h)
      • R(c);N_GUARD,P_SPINS(b),S_CUTB(f)::S(I)
      • R(h);P_SPINB(f)::QAR(H)+P(E)
      • B(f);N_GUARD,P_PINP(D),P_SPINR(h),S_CUTR(c)::S(I)
      • S(b);P_SPINR(c),S_CUTB(f)::S(I)
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