MESON Chess Problem Database

Problem Display
PID: 197963 (1qQr4/p1br3B/8/Rp6/8/4k2n/1p1RNpPB/1N3K2 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

The Problemist, 1981

1qQr4/p1br3B/8/Rp6/8/4k2n/1p1RNpPB/1N3K2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxh3#
    • 1...Bd6
      • 2.Rd3#
      • 2.Qc3#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Rd3#
        • 2.Ra3#
      • 1...Rxd6
        • 2.Qxh3#
      • 1...Rxh7
        • 2.Qe6#
      • 1...Bxa5
        • 2.Rd3#
        • 2.Qc5#
      • 1...Bxd6
        • 2.Rd3#
        • 2.Qc3#
      • 1...b4
        • 2.Rd3#
        • 2.Re5#
      • 1...Sf4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Ra3#
      • 1...Rxd6
        • 2.Qxh3#
      • 1...Rxh7
        • 2.Qe6#
      • 1...Bxa5
        • 2.Qc5#
      • 1...Bxd6
        • 2.Qc3#
      • 1...Sf4
        • 2.Bxf4#
      • 1...b4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(h);OGATE::QAR(I),XS(d)
  • Tries
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);OGATE,XB(F)::QAR(I),XS(d)
        • R(h);OGATE,XB(H)::QAR(I)
      • Refutation
        • S(d);
  • Actual
    • R(C);
    • Threat
      • R(G)
    • Vars
      • R(h);OGATE,XR(C)::QAR(I),XS(d)
      • R(h);OGATE,XB(H)::QAR(I)
      • B(g);OGATE,XR(G)::QAB(I)
      • B(g);OGATE,XR(C)::QAR2(I)
      • S(d);N_GUARD::B(F),XS(d)
      • P(e);OGATE::R(G)
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