MESON Chess Problem Database

Problem Display
PID: 270744 (q1Bn2n1/4p3/2pp1PR1/PpN1k3/1Q1N1pP1/3p1P2/1b1P3K/1bR5 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Probleemblad, 1951

q1Bn2n1/4p3/2pp1PR1/PpN1k3/1Q1N1pP1/3p1P2/1b1P3K/1bR5

#2

12 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf6
      • 2.Rg5#
    • 1...dxc5
      • 2.Qxc5#
    • 1...d5
      • 2.Sd7#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qe4#
      • 1...Sxf6
        • 2.Rg5#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d5
        • 2.Sxd3#
      • 1...Kd5!
    • 1.Se2?
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sxf6
        • 2.Rg5#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d5
        • 2.Qxf4#
      • 1...dxe2!
    • 1.Sdb3?
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sxf6
        • 2.Rg5#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d5!
    • 1.Sxb5?
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sxf6
        • 2.Rg5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d5
        • 2.Re1#
      • 1...cxb5!
    • 1.Sf5?
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d5
        • 2.Re1#
      • 1...Sxf6!
    • 1.Sxc6+?
      • 1...Kd5
        • 2.Qe4#
      • 1...Sxc6
        • 2.Qe4#
      • 1...Qxc6!
  • Keys
    • 1.Sde6!
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sxf6
        • 2.Rg5#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d5
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(l);SBLOCK,XP(J)::R(K)
    • P(h);OGATE,XS(I)::QAR2(E),XP(h)
    • P(h);SBLOCK::S(I)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(E)
      • Vars
        • S(l);SBLOCK,XP(J)::R(K)
        • P(h);OGATE,XS(I)::QAR2(E),XP(h)
        • B(b);N_GUARD::QAB1(E),XB(b)
        • P(h);SBLOCK::S(I),XP(c)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • S(F);
      • Threat
        • QAR1(E)
      • Vars
        • K(f);P-FLIGHT::QAB1(E)
        • S(l);SBLOCK,XP(J)::R(K)
        • P(h);OGATE,XS(I)::QAR2(E),XP(h)
        • B(b);N_GUARD::QAB1(E),XB(b)
        • P(h);SBLOCK::QAB1(E),XP(d)
      • Refutation
        • P(c);XS(F)
    • Try
      • S(F);
      • Threat
        • QAR1(E)
      • Vars
        • K(f);P-FLIGHT::QAB1(E)
        • S(l);SBLOCK,XP(J)::R(K)
        • P(h);OGATE,XS(I)::QAR2(E),XP(h)
        • B(b);N_GUARD::QAB1(E),XB(b)
      • Refutation
        • P(h);
    • Try
      • S(F);XP(e)
      • Threat
        • QAR1(E)
      • Vars
        • K(f);P-FLIGHT::QAB1(E)
        • S(l);SBLOCK,XP(J)::R(K)
        • B(b);N_GUARD::QAB1(E),XB(b)
        • P(h);SBLOCK::R(A)
      • Refutation
        • P(g);XS(F)
    • Try
      • S(F);
      • Threat
        • QAR1(E)
      • Vars
        • K(f);P-FLIGHT::QAB1(E)
        • B(b);N_GUARD::QAB1(E),XB(b)
        • P(h);SBLOCK::R(A)
      • Refutation
        • S(l);XP(J)
    • Try
      • S(F);CHECK,XP(g)
      • Vars
        • K(f);P-FLIGHT::QAB1(E)
        • S(k);XS(F)::QAR1(E)
      • Refutation
        • Q(j);XS(F)
  • Actual
    • S(F);
    • Threat
      • QAR1(E)
    • Vars
      • K(f);P-FLIGHT::QAB1(E)
      • S(l);SBLOCK,XP(J)::R(K)
      • P(h);OGATE,XS(I)::QAR2(E),XP(h)
      • B(b);N_GUARD::QAB1(E),XB(b)
      • P(h);SBLOCK::QAB1(E),XP(d)
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