MESON Chess Problem Database

Problem Display
PID: 129876 (8/7n/1bQp4/3pk1Pb/3N4/3P2K1/1P3P2/8 w - - 0 1)

Kauder, Jiri

Deutsche Schachzeitung, 1917

8/7n/1bQp4/3pk1Pb/3N4/3P2K1/1P3P2/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qc3#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Sc6#
      • 1...Bxd4
        • 2.f4#
      • 1...Sxg5
        • 2.Qg7#
      • 1...Kxd4!
    • 1.Qe8+?
      • 1...Kxd4
        • 2.Qe3#
      • 1...Bxe8!
    • 1.Qc1?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Kxd4
        • 2.Qe3#
        • 2.Qc3#
      • 1...Sxg5
        • 2.Qf4#
      • 1...Bf3
        • 2.Qf4#
      • 1...Bg6
        • 2.Qf4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Bxd4!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sc6#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Bxd4
        • 2.f4#
      • 1...Sxg5
        • 2.Qh8#
      • 1...Be8
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
  • Tries
    • Try
      • Q(G);
      • Threat
        • S(E)
      • Vars
        • B(d);SBLOCK,XS(E)::P(B)
        • S(f);N_GUARD,XP(F)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XS(E)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XS(E)::QAB1(G)
      • Refutation
        • B(c);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);XP(F)::QAB1(G)
        • B(c);::QAB1(G)
        • S(f);::QAB1(G)
      • Refutation
        • B(d);XS(E)
  • Actual
    • Q(G);
    • Threat
      • S(E)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
      • B(d);SBLOCK,XS(E)::P(B)
      • S(f);N_GUARD,XP(F)::QAB(G)
      • B(c);N_GUARD::S(E)
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