MESON Chess Problem Database

Problem Display
PID: 208889 (8/1Nbpp3/2n2P2/2NBk3/2b2R2/1PPpK3/8/8 w - - 0 1)

Quien, Louis

American Chess Journal, 1876

8/1Nbpp3/2n2P2/2NBk3/2b2R2/1PPpK3/8/8

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.bxc4?
      • threat
        • 2.Sxd3#
        • 2.Sxd7#
      • 1...Sb4
        • 2.Sxd7#
      • 1...Sb8
        • 2.Sxd3#
      • 1...d2
        • 2.Sd3#
        • 2.Sxd7#
      • 1...d6
        • 2.Sxd3#
        • 2.Sd7#
      • 1...Bb6!
  • Keys
    • 1.Be4!
      • threat
        • 2.Rf5#
      • 1...Be6
        • 2.Sxd3#
      • 1...Sd4
        • 2.cxd4#
      • 1...e6
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(A);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);::S(E),XP(f)
        • S(d);::S(E),XP(a)
      • Refutation
        • B(e);P_PINS(E)
  • Actual
    • B(F);
    • Threat
      • R1(D)
    • Vars
      • B(b);N_GUARD,SBLOCK::S(E),XP(a)
      • S(d);OGATE::P(B),XS(d)
      • P(g);SBLOCK::S(E),XP(f)
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