MESON Chess Problem Database

Problem Display
PID: 240655 (b4K2/b1p1RPN1/5Pp1/2Rn4/2nkB3/Q7/5r2/N7 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1984

b4K2/b1p1RPN1/5Pp1/2Rn4/2nkB3/Q7/5r2/N7

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sc2#
    • 1...Rc2
      • 2.Sxc2#
    • 1...Rf3
      • 2.Sc2#
    • 1...Rf4
      • 2.Sc2#
    • 1...Rf5
      • 2.Sc2#
    • 1...Rxf6
      • 2.Sc2#
    • 1...Bxc5
      • 2.Qd3#
    • 1...Sd2
      • 2.Sc2#
    • 1...Sce3
      • 2.Sb3#
  • Tries
    • 1.Sf5+?
      • 1...Rxf5
        • 2.Sc2#
      • 1...gxf5!
  • Keys
    • 1.Bxg6!
      • threat
        • 2.Re4#
      • 1...Bxc5
        • 2.Qd3#
      • 1...Sxa3
        • 2.Sb3#
      • 1...Sxf6
        • 2.Se6#
      • 1...Sxe7
        • 2.Se6#
      • 1...Sb4
        • 2.Se6#
      • 1...Re2
        • 2.Sf5#
      • 1...Rf4
        • 2.Sc2#
      • 1...Rf5
        • 2.Sc2#
        • 2.Sxf5#
      • 1...Sd2
        • 2.Sc2#
      • 1...Se5
        • 2.Se6#
      • 1...Sd6
        • 2.Sb3#
      • 1...Sc3
        • 2.Sb3#
      • 1...Sde3
        • 2.Se6#
      • 1...Sf4
        • 2.Sf5#
      • 1...Sdb6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD::S(A),XR(a)
    • R(a);N_GUARD,P_PINP(G),XP(E)::S(A)
    • B(f);P_PINR(F),SBLOCK,XR(D)::QAR1(B)
    • S(b);S_CUTR(a)::S(A)
    • S(b);SBLOCK::S(A)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • R(a);XS(H)::S(A)
      • Refutation
        • P(e);XS(H)
  • Actual
    • B(C);XP(e)
    • Threat
      • R1(F)
    • Vars
      • B(f);P_PINR(F),SBLOCK,XR(D)::QAR1(B)
      • S(b);XQ(B)::S(A)
      • S(d);XP(E)::S(H)
      • S(d);XR(F)::S(H)
      • S(d);::S(H)
      • R(a);N_GUARD::S(H)
      • R(a);N_GUARD::S(A)
      • S(b);S_CUTR(a)::S(A)
      • S(b);SBLOCK::S(H)
      • S(b);::S(A)
      • S(d);SBLOCK::S(A)
      • S(d);S_CUTR(a)::S(H)
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