MESON Chess Problem Database

Problem Display
PID: 75721 (3RNR1Q/8/1p2K1p1/4N3/3pkpp1/4Prq1/2Pp4/b6B w - - 0 1)

Arnstam, Knut Anders Olof

Tidskrift for Schack, 1941

3RNR1Q/8/1p2K1p1/4N3/3pkpp1/4Prq1/2Pp4/b6B

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...dxe3
      • 2.Sf6#
    • 1...fxe3
      • 2.Sd6#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sed6#
        • 2.Sf6#
        • 2.Qe5#
      • 1...dxe3
        • 2.Scd6#
        • 2.Sed6#
      • 1...Qh4
        • 2.Sed6#
        • 2.Rxf4#
        • 2.Qe5#
      • 1...d3
        • 2.Sed6#
        • 2.cxd3#
      • 1...fxe3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qe5#
      • 1...Kxe3
        • 2.Qe5#
      • 1...dxe3
        • 2.Sd6#
      • 1...fxe3
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK,XP(C)::S(G)
    • P(g);SBLOCK,XP(C)::S(G)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Refutation
        • P(g);XP(C)
  • Actual
    • S(D);
    • Threat
      • QAR1(I)
    • Vars
      • K(f);N_SPINR(c),P-FLIGHT,XP(C)::QAR2(I)
      • P(e);SBLOCK,XP(C)::S(G)
      • P(g);SBLOCK,XP(C)::S(G)
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