MESON Chess Problem Database

Problem Display
PID: 252988 (3Nb1K1/6p1/6Nk/5Q2/5p1P/8/3B2r1/6r1 w - - 0 1)

Cheylan, Yves

Probleemblad, 1983

3Nb1K1/6p1/6Nk/5Q2/5p1P/8/3B2r1/6r1

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Sf7#
    • 1...Bb5
      • 2.Sf7#
    • 1...Bc6
      • 2.Sf7#
    • 1...Bd7
      • 2.Sf7#
    • 1...Bf7+
      • 2.Sxf7#
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Qh7#
      • 1...Bf7+
        • 2.Sxf7#
      • 1...Rg6
        • 2.Qh5#
      • 1...Bg6
        • 2.Sxg2#
      • 1...g6
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(f);N_GUARD::S(E)
    • B(f);CHECK,N_GUARD::S(E),XB(f)
  • Actual
    • S(D);XP(c)
    • Threat
      • QAR1(C)
    • Vars
      • B(f);CHECK,N_GUARD::S(E),XB(f)
      • R(b);S_CUTB(f)::QAR1(C)
      • B(f);S_CUTP(e)::B(A)+S(D),XR(b)
      • P(e);OGATEB::QAB(C)
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