MESON Chess Problem Database

Problem Display
PID: 101418 (8/3Kn2B/2N5/2pk4/R1p1p3/4P3/3P4/1b6 w - - 0 1)

Pape, Edouard

Good Companions, 1921

8/3Kn2B/2N5/2pk4/R1p1p3/4P3/3P4/1b6

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Bg8#
    • 1...Sg6
      • 2.Bg8#
    • 1...Sc8
      • 2.Bg8#
    • 1...Sg8
      • 2.Bxg8#
  • Tries
    • 1.Sb4+?
      • 1...cxb4
        • 2.Ra5#
      • 1...Ke5!
  • Keys
    • 1.d4!
      • threat
        • 2.Sxe7#
      • 1...Sxc6
        • 2.Bg8#
      • 1...cxd4
        • 2.Ra5#
      • 1...cxd4 ep
        • 2.Bxe4#
      • 1...exd4 ep
        • 2.e4#
      • 1...Sf5
        • 2.Bg8#
      • 1...Sg6
        • 2.Bg8#
      • 1...Sc8
        • 2.Bg8#
      • 1...Sg8
        • 2.Bxg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::B(F)
    • S(f);N_GUARD::B(F),XS(f)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • P(d);XS(D)::R(C)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • P(A);
    • Threat
      • S(D),XS(f)
    • Vars
      • S(f);N_GUARD,XS(D)::B(F)
      • P(d);OGATEB,XP(A)::R(C)
      • P(b);EP,S_CUTB(a),XP(A)::B(F),XP(c)
      • P(c);EP,OGATE,XP(A)::P(B)
      • S(f);N_GUARD::B(F)
      • S(f);N_GUARD::B(F),XS(f)
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