MESON Chess Problem Database

Problem Display
PID: 38157 (2N1QNB1/r3n3/Rr1P1k2/4p1Rb/2p4P/8/2qpp2K/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Schach-Echo, 1964

2N1QNB1/r3n3/Rr1P1k2/4p1Rb/2p4P/8/2qpp2K/8

#2

9 + 10

3747 FIDE Album (1962-1964) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sh7#
    • 1...Qb3
      • 2.Sh7#
    • 1...Qa4
      • 2.Sh7#
    • 1...Qh7
      • 2.Sxh7#
    • 1...Qc1
      • 2.Sh7#
    • 1...Qa2
      • 2.Sh7#
    • 1...Qb2
      • 2.Sh7#
    • 1...Qc3
      • 2.Sh7#
    • 1...Rxd6
      • 2.Rxd6#
    • 1...Rxa6
      • 2.Sd7#
      • 2.Qxe7#
    • 1...Rd7
      • 2.Sxd7#
    • 1...Ra8
      • 2.Sd7#
      • 2.Qxe7#
    • 1...Bf3
      • 2.Qf7#
    • 1...Bg4
      • 2.Qf7#
    • 1...Bf7
      • 2.Qxf7#
    • 1...Sd5
      • 2.Qxe5#
      • 2.Qe6#
    • 1...Sf5
      • 2.Qe6#
    • 1...Sc6
      • 2.Qe6#
    • 1...Sxc8
      • 2.Qxe5#
      • 2.Qe6#
    • 1...Sxg8
      • 2.Qe6#
    • 1...e4
      • 2.Sh7#
  • Keys
    • 1.d7!
      • threat
        • 2.Qxe7#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Bxe8
        • 2.dxe8S#
      • 1...Sxc8
        • 2.Qxe5#
      • 1...Sxg8
        • 2.Rxb6#
      • 1...Sg6
        • 2.Qf7#
      • 1...Qh7
        • 2.Sxh7#
      • 1...Sd5
        • 2.Qxe5#
      • 1...Sf5
        • 2.Sh7#
      • 1...Sc6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD::S(H)
    • Q(a);N_GUARD::S(H),XQ(a)
    • R(g);OGATE,P_SPINR(g),XP(E)::R(D),XR(g)
    • R(i);N_GUARD::S(H),XR(i)
    • B(f);N_GUARD::QAR1(G)
    • B(f);N_GUARD::QAR1(G),XB(f)
    • S(j);OGATE::QAR1(G)
    • S(j);OGATE,XB(I)::QAR1(G)
    • P(e);S_CUTQ(a)::S(H)
  • Actual
    • P(E);P_PINR(g)
    • Threat
      • QAB1(G),XS(j)
    • Vars
      • R(i);XP(E)::S(H),XR(i)
      • B(f);OGATE,XQ(G)::PXB(f)=S
      • S(j);OGATE,XS(F)::QAB1(G),XP(e)
      • S(j);N_GUARD,XB(I)::R(D),XR(g)
      • S(j);S_CUTB(f)::QAR1(G)
      • Q(a);N_GUARD::S(H),XQ(a)
      • S(j);OGATE::QAB1(G),XP(e)
      • S(j);S_CUTQ(a)::S(H)
      • S(j);N_SPINR(g),OGATE::QAR1(G)
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