MESON Chess Problem Database

Problem Display
PID: 108779 (3K2b1/8/1n1p4/1P1kr2R/3PN3/7Q/2N5/4R3 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1985

3K2b1/8/1n1p4/1P1kr2R/3PN3/7Q/2N5/4R3

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qb3#
    • 1...Sc4
      • 2.Sc3#
      • 2.Sf6#
    • 1...Sd7
      • 2.Qb3#
    • 1...Sa8
      • 2.Qb3#
    • 1...Sc8
      • 2.Qb3#
  • Tries
    • 1.Sb4+?
      • 1...Kxd4
        • 2.Qc3#
        • 2.Qd3#
      • 1...Kc4!
    • 1.Rxe5+?
      • 1...Kc4
        • 2.Sd2#
        • 2.Sxd6#
        • 2.Qc3#
      • 1...dxe5!
  • Keys
    • 1.Qf3!
      • 1...Kc4
        • 2.Sxd6#
      • 1...Ke6
        • 2.Sg5#
      • 1...Rxh5
        • 2.Sd2#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Rf5
        • 2.Sd2#
      • 1...Rg5
        • 2.Sd2#
      • 1...Be6
        • 2.Sd2#
      • 1...Bh7
        • 2.Qf7#
      • 1...Sa4
        • 2.Qb3#
      • 1...Sc4
        • 2.Sc5#
      • 1...Sd7
        • 2.Qb3#
      • 1...Sa8
        • 2.Qb3#
      • 1...Sc8
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAB(C)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • R(G);CHECK,XR(b)
      • Refutation
        • P(d);XR(G)
  • Actual
    • Q(C);
    • Vars
      • K(a);N_SPINR(b),S_FLIGHT::S(E),XP(d)
      • K(a);N_SPINR(b),S_FLIGHT::S(E)
      • R(b);N_SPINR(b),XR(G)::QAB(C)+S(E)
      • B(e);N_GUARD::QAB(C),XB(e)
      • R(b);::QAB(C)+S(E)
      • B(e);SBLOCK::QAB(C)+S(E)
      • B(e);N_GUARD::QAB(C)
      • S(c);N_GUARD::QAB(C)
      • S(c);SBLOCK::QAB(C)+S(E)
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