MESON Chess Problem Database

Problem Display
PID: 78090 (8/5N2/2B5/3R1n2/4kN2/7K/8/8 w - - 0 1)

d'Orville, Peter Auguste

250 Problemes des Echecs, 1842

8/5N2/2B5/3R1n2/4kN2/7K/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sg2?
      • threat
        • 2.Sg5#
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Kf3
        • 2.Rd2#
      • 1...Se3
        • 2.Sg5#
      • 1...Sg3
        • 2.Sg5#
      • 1...Sh4
        • 2.Sg5#
      • 1...Sd6
        • 2.Sg5#
      • 1...Sh6
        • 2.Sg5#
      • 1...Se7
        • 2.Sg5#
      • 1...Sg7
        • 2.Sg5#
      • 1...Sd4!
  • Keys
    • 1.Rd3+!
      • 1...Kxf4
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(6)
      • Vars
        • K(a);S_FLIGHT::B(D)+R(C)
        • S(b);::S(E)
      • Refutation
        • S(b);
  • Actual
    • R(C);CHECK
    • Vars
      • K(a);P-FLIGHT,XS(B)::R1(C)
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