MESON Chess Problem Database

Problem Display
PID: 129883 (2B3Qb/5n2/1B1p1PN1/K2k4/2p5/2pp4/n7/8 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Bohemia, 1902

2B3Qb/5n2/1B1p1PN1/K2k4/2p5/2pp4/n7/8

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Se7#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qa8#
      • 1...Kc6
        • 2.Qa8#
      • 1...Sb4!
    • 1.Qxf7+?
      • 1...Kc6
        • 2.Se7#
        • 2.Bb7#
        • 2.Qxc4#
        • 2.Qb7#
      • 1...Ke4!
    • 1.Qe8?
      • threat
        • 2.Sf4#
        • 2.Bb7#
      • 1...Sb4
        • 2.Sf4#
      • 1...Sd8
        • 2.Sf4#
      • 1...Se5!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qh1#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6
        • 2.Se7#
      • 1...Se5
        • 2.Se7#
      • 1...Sg5
        • 2.Qb7#
      • 1...Sh6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINS(g),S_FLIGHT::S(D)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAB(F)
      • Vars
        • K(e);N_SPINS(g),S_FLIGHT::QAB(F)
      • Refutation
        • S(a);
    • Try
      • Q(F);CHECK,XS(g)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(F);N_PINS(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::S(D)
        • S(g);::S(D)
      • Refutation
        • S(g);
  • Actual
    • Q(F);N_PINS(g)
    • Threat
      • QAB(F)
    • Vars
      • K(e);S_FLIGHT::QAB(F)
      • K(e);S_FLIGHT::S(D)
      • S(g);SBLOCK::S(D)
      • S(g);OGATE::QAB(F)
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