MESON Chess Problem Database

Problem Display
PID: 80188 (5N1R/5K2/2p1B1pN/6kb/4Pp2/1p3pB1/3R4/1Q6 w - - 0 1)

Degener, Udo

3rd Prize, Vecherni Kharkov TT, 1988

5N1R/5K2/2p1B1pN/6kb/4Pp2/1p3pB1/3R4/1Q6

#2

9 + 7

102 Probleemblad 2008

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Sf7#
        • 2.Sh7#
      • 1...Bg4
        • 2.Sf7#
      • 1...fxg3!
    • 1.Sg4?
      • threat
        • 2.Sh7#
      • 1...Bxg4
        • 2.Bh4#
      • 1...fxg3!
    • 1.Sg8?
      • threat
        • 2.Sh7#
      • 1...Bg4
        • 2.Bh4#
      • 1...fxg3!
    • 1.Bxf4+?
      • 1...Kh4
        • 2.Rh2#
        • 2.Qh1#
      • 1...Kxf4!
    • 1.Qc1?
      • threat
        • 2.Qc5#
      • 1...fxg3
        • 2.Rh2#
      • 1...c5
        • 2.Rd5#
        • 2.Qxc5#
      • 1...Bg4!
    • 1.Qh1?
      • threat
        • 2.Bh4#
        • 2.Qh4#
      • 1...Bg4
        • 2.Sh7#
        • 2.Qh4#
      • 1...fxg3!
    • 1.Qb2?
      • threat
        • 2.Qe5#
        • 2.Qf6#
      • 1...fxg3
        • 2.Qf6#
      • 1...Bg4!
  • Keys
    • 1.Rh2!
      • threat
        • 2.Bh4#
      • 1...fxg3
        • 2.Qc1#
      • 1...Bg4
        • 2.Sh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD::R(B)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::S(F)
      • Refutation
        • P(c);XB(C)
    • Try
      • S(F);
      • Threat
        • S(H)
      • Vars
        • B(e);XS(F)::B(C)
      • Refutation
        • P(c);XB(C)
    • Try
      • S(F);
      • Threat
        • S(H)
      • Vars
        • B(e);::B(C)
      • Refutation
        • P(c);XB(C)
    • Try
      • B(C);CHECK,XP(c)
      • Refutation
        • K(d);S_FLIGHT,XB(C)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(c);OGATEB,XB(C)::QAB(A)+R(B)
      • Refutation
        • B(e);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);XB(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XB(C)::QAB1(A)
      • Refutation
        • B(e);
  • Actual
    • R(B);
    • Threat
      • B(C)
    • Vars
      • P(c);OGATEB,XB(C)::QAB(A)
      • B(e);::S(H)
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