MESON Chess Problem Database

Problem Display
PID: 78546 (8/1p1QNR2/3P1N2/4k3/r7/2P5/5P2/1bK5 w - - 0 1)

Knuppert, Hugo

3rd Prize, Skakbladet, 1944

8/1p1QNR2/3P1N2/4k3/r7/2P5/5P2/1bK5

#2

8 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sg6#
    • 1...Ba2
      • 2.Sg6#
    • 1...Be4
      • 2.Sg4#
    • 1...Bg6
      • 2.Sxg6#
  • Tries
    • 1.Sg4+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Rxg4!
    • 1.Sc6+?
      • 1...Kf4
        • 2.Qg4#
      • 1...bxc6!
    • 1.Qf5+?
      • 1...Kxd6
        • 2.Se8#
      • 1...Bxf5!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Se4#
        • 2.Qe3#
      • 1...Kxe6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qf5#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Rxe4
        • 2.Rf5#
      • 1...Bxe4
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);S_CUTB(a)::S(G)
    • B(a);N_GUARD::S(G)
    • B(a);SBLOCK,S_CUTR(b)::S(E)
    • B(a);N_GUARD::S(G),XB(a)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(F)
      • Refutation
        • R(b);XS(E)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • P(d);XS(G)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT,XP(D)::S(E)
      • Refutation
        • B(a);XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);P-FLIGHT,XQ(F)
  • Actual
    • S(E);
    • Threat
      • QAR1(F)
    • Vars
      • K(c);P-FLIGHT,XS(E)::QAB1(F)
      • R(b);SBLOCK,XS(E)::R1(H)
      • B(a);SBLOCK,XS(E)::P(B)
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