MESON Chess Problem Database

Problem Display
PID: 240623 (2b5/2pp4/1b1r1p2/n1pkN3/K3R3/5Q2/2P5/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1980

2b5/2pp4/1b1r1p2/n1pkN3/K3R3/5Q2/2P5/8

#2

5 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Qd3#
  • Tries
    • 1.Re1+?
      • 1...Kd4
        • 2.Qd3#
        • 2.c3#
      • 1...Ke6!
    • 1.Re2+?
      • 1...Kd4
        • 2.Qd3#
        • 2.c3#
      • 1...Ke6!
    • 1.Re3+?
      • 1...Kd4
        • 2.Qe4#
        • 2.c3#
      • 1...Ke6!
    • 1.Rb4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Ke6!
    • 1.Rc4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Ke6!
    • 1.Rf4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Ke6!
    • 1.Rg4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Ke6!
    • 1.Rh4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Ke6!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Re6#
      • 1...Rxc6
        • 2.Qd3#
      • 1...Sxc6
        • 2.c4#
      • 1...dxc6
        • 2.Qd3#
      • 1...Re6
        • 2.Rd4#
      • 1...c4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK::QAR2(B)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(c);S_FLIGHT,XS(E)::QAB(B)+R(D)
      • R(e);SBLOCK,XS(E)::QAR2(B)
      • S(a);N_GUARD,SBLOCK,XS(E)::P(A)
      • P(h);SBLOCK,XS(E)::QAR2(B)
      • R(e);SBLOCK::QAB(B)+R(D),DCHECK
      • P(b);SBLOCK::QAB(B)+R(D),DCHECK
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