MESON Chess Problem Database

Problem Display
PID: 240657 (1R4BB/8/8/2brnN2/Ppk1p2R/5p2/2PPP3/2K5 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1984

1R4BB/8/8/2brnN2/Ppk1p2R/5p2/2PPP3/2K5

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3+
      • 2.exd3#
    • 1...Sc6
      • 2.d3#
    • 1...Sg6
      • 2.d3#
    • 1...Sd7
      • 2.d3#
    • 1...b3
      • 2.cxb3#
  • Tries
    • 1.Sd6+?
      • 1...Kd4
        • 2.Rxe4#
        • 2.e3#
      • 1...Bxd6!
    • 1.d3+?
      • 1...Sxd3+
        • 2.exd3#
      • 1...Kc3!
  • Keys
    • 1.Rc8!
      • threat
        • 2.Rxe4#
      • 1...Sd3+
        • 2.exd3#
      • 1...Sg4
        • 2.Sd6#
      • 1...Sc6
        • 2.d3#
      • 1...Sf7
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(g);CHECK,OGATE::P(D),XS(g)
    • S(g);N_GUARD::P(C)
    • P(b);OGATE::P(B),XP(b)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • B(e);XS(G)
    • Try
      • P(C);CHECK
      • Vars
        • S(g);CHECK,OGATE,XP(C)::P(D),XS(g)
      • Refutation
        • K(c);N_SPINP(d),N_SPINR(f),P-FLIGHT,P_SPINS(g)
  • Actual
    • R(H);P_PINB(e)
    • Threat
      • R(F),XP(d)
    • Vars
      • S(g);CHECK,OGATE::P(D),XS(g)
      • S(g);N_SPINP(d)::S(G)
      • S(g);N_GUARD,N_SPINB(e)::P(C)
      • S(g);N_SPINR(f)::S(G)
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