MESON Chess Problem Database

Problem Display
PID: 241205 (bb1R2K1/4p1n1/1Q2Ppp1/3pk3/1n1p3N/6P1/3R2B1/1qN5 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Sachsische Zeitung, 1982

bb1R2K1/4p1n1/1Q2Ppp1/3pk3/1n1p3N/6P1/3R2B1/1qN5

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Re2#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sd3
      • 2.Re2#
    • 1...Sf5
      • 2.Sxg6#
    • 1...d3
      • 2.Qe3#
  • Tries
    • 1.Sd3+?
      • 1...Sxd3
        • 2.Re2#
      • 1...Qxd3!
  • Keys
    • 1.Kf7!
      • threat
        • 2.Qxd4#
        • 2.Qxb8#
      • 1...Qxc1
        • 2.Qxd4#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Qc2
        • 2.Qxd4#
      • 1...Qd3
        • 2.Qxb8#
      • 1...Qe4
        • 2.Qxb8#
      • 1...Qa1
        • 2.Re2#
        • 2.Qxb8#
      • 1...Qb2
        • 2.Qxb8#
      • 1...Bb7
        • 2.Qxd4#
      • 1...Bd6
        • 2.Qxd4#
      • 1...Ba7
        • 2.Qc7#
      • 1...Bc7
        • 2.Qxd4#
        • 2.Qxc7#
      • 1...Sa2
        • 2.Qxd4#
      • 1...Sc2
        • 2.Sd3#
      • 1...Sd3
        • 2.Re2#
      • 1...Sa6
        • 2.Qxd4#
      • 1...Sc6
        • 2.Rxd5#
      • 1...Sf5
        • 2.Sxg6#
      • 1...Se8
        • 2.Qxd4#
      • 1...d3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 1
  • Sets
    • Q(a);N_GUARD::R(B)
    • S(b);N_GUARD,S_CUTQ(a)::S(A)
    • S(b);S_CUTQ(a)::R(B)
    • S(i);SBLOCK,S_CUTQ(a)::S(E),XP(g)
    • P(c);OGATE::QAR2(F)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • S(b);XS(A)::R(B)
      • Refutation
        • Q(a);XS(A)
  • Actual
    • K(I);S_FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);XS(A)::QAB1(F),XP(c)
      • S(i);OGATE,XP(G)::QAR1(F),XS(i)
      • Q(a);::QAB1(F),XP(c)
      • Q(a);::QAB(F),XB(k)
      • B(j);::QAB1(F),XP(c)
      • B(k);::QAB1(F),XP(c)
      • B(k);N_GUARD::QAB(F)
      • S(b);::QAB1(F),XP(c)
      • S(b);N_GUARD,S_CUTQ(a)::S(A)
      • S(b);S_CUTQ(a)::R(B)
      • S(b);N_GUARD,S_CUTB(j)::R1(H),XP(d)
      • S(i);SBLOCK,S_CUTQ(a)::S(E),XP(g)
      • S(i);::QAB1(F),XP(c)
      • P(c);OGATE::QAR2(F)
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