MESON Chess Problem Database

Problem Display
PID: 143366 (7K/3p4/1P1PpR2/2Q1P3/P1P5/3Pp3/4R2b/7k w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1976

7K/3p4/1P1PpR2/2Q1P3/P1P5/3Pp3/4R2b/7k

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Rf1#
  • Tries
    • 1.Qa3?
      • 1...Kg1
        • 2.Qc1#
        • 2.Qa1#
      • 1...Bxe5
        • 2.Qc1#
      • 1...Bg3
        • 2.Rf1#
      • 1...Bf4
        • 2.Qc1#
        • 2.Qa1#
      • 1...Bg1!
    • 1.Qxe3?
      • 1...Bxe5
        • 2.Qc1#
      • 1...Bg1
        • 2.Qf3#
        • 2.Qe4#
      • 1...Bg3
        • 2.Rf1#
      • 1...Bf4!
    • 1.Qb4?
      • 1...Kg1
        • 2.Qe1#
        • 2.Qb1#
      • 1...Bxe5
        • 2.Qe1#
        • 2.Qb1#
      • 1...Bg3
        • 2.Rf1#
      • 1...Bf4
        • 2.Qe1#
        • 2.Qb1#
      • 1...Bg1!
    • 1.Qd4?
      • 1...Kg1
        • 2.Qa1#
      • 1...Bg1
        • 2.Qe4#
      • 1...Bg3
        • 2.Rf1#
      • 1...Bf4
        • 2.Qa1#
      • 1...Bxe5!
    • 1.Qb5?
      • 1...Kg1
        • 2.Qb1#
      • 1...Bxe5
        • 2.Qb1#
      • 1...Bg3
        • 2.Rf1#
      • 1...Bf4
        • 2.Qb1#
      • 1...Bg1!
    • 1.Qd5+?
      • 1...Kg1
        • 2.Re1#
        • 2.Qg2#
      • 1...exd5!
    • 1.Qc6+?
      • 1...Kg1
        • 2.Re1#
        • 2.Qg2#
      • 1...dxc6!
  • Keys
    • 1.Qa5!
      • 1...Kg1
        • 2.Qe1#
      • 1...Bxe5
        • 2.Qe1#
      • 1...Bg1
        • 2.Qa8#
      • 1...Bg3
        • 2.Rf1#
      • 1...Bf4
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::R(I)
  • Tries
    • Try
      • Q(E);
      • Vars
        • B(b);N_GUARD,P_PINR(I),XP(F)::QAR(E)
        • B(b);N_GUARD::R(I)
      • Refutation
        • B(b);
    • Try
      • Q(E);XP(c)
      • Vars
        • B(b);N_GUARD,P_PINR(I),XP(F)::QAR(E)
        • B(b);N_GUARD::R(I)
      • Refutation
        • B(b);
    • Try
      • Q(E);
      • Vars
        • B(b);N_GUARD::R(I)
      • Refutation
        • B(b);
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR(E)
        • B(b);SBLOCK::QAB(E)
        • B(b);N_GUARD::R(I)
        • B(b);N_GUARD::QAB1(E)
      • Refutation
        • B(b);P_PINR(I),XP(F)
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAR(E)
        • B(b);N_GUARD,P_PINR(I),XP(F)::QAR(E)
        • B(b);N_GUARD::R(I)
        • B(b);N_GUARD::QAR(E)
      • Refutation
        • B(b);
    • Try
      • Q(E);CHECK
      • Refutation
        • P(d);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • P(e);XQ(E)
  • Actual
    • Q(E);
    • Vars
      • K(a);P-FLIGHT::QAR2(E)
      • B(b);N_GUARD,P_PINR(I),XP(F)::QAR(E)
      • B(b);SBLOCK::QAB(E)
      • B(b);N_GUARD::R(I)
      • B(b);N_GUARD::QAR(E)
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