MESON Chess Problem Database

Problem Display
PID: 15448 (1Q6/4p3/p1R1R3/8/1pNpN2p/2Pk2r1/r2p1PP1/b2K4 w - - 0 1)

Kuzovkov, Aleksandr S

3rd Prize, Die Schwalbe, 1984/I

1Q6/4p3/p1R1R3/8/1pNpN2p/2Pk2r1/r2p1PP1/b2K4

#2

9 + 10

102 Probleemblad 2006

SOLUTION

  • SOUND
  • Sets
    • 1...dxc3
      • 2.Qd8#
    • 1...h3
      • 2.Qxg3#
  • Tries
    • 1.Qxb4?
      • threat
        • 2.Sc5#
      • 1...dxc3
        • 2.Se5#
      • 1...Ra5
        • 2.Qb1#
      • 1...Rg5!
    • 1.Qb5?
      • threat
        • 2.Sb2#
      • 1...dxc3
        • 2.Qd5#
      • 1...Rb2
        • 2.Sxb2#
      • 1...Bb2
        • 2.Sxb2#
      • 1...axb5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Se5#
      • 1...dxc3
        • 2.Sc5#
      • 1...Ra5
        • 2.Qxd2#
      • 1...Rg5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATEB,XP(D)::QAR(I)
    • P(h);N_GUARD::QAR(I),XR(e)
  • Tries
    • Try
      • Q(I);XP(f)
      • Threat
        • S(F)
      • Vars
        • P(g);XP(D)::S(E)
        • R(b);N_GUARD::QAB(I)
      • Refutation
        • R(e);
    • Try
      • Q(I);
      • Threat
        • QAB(I)+S(E),DCHECK
      • Vars
        • P(g);OGATEB,XP(D)::QAR2(I)
        • R(b);::QAB(I)+S(E),DCHECK,XR(b)
        • B(a);::QAB(I)+S(E),DCHECK,XB(a)
      • Refutation
        • P(i);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • S(E)
    • Vars
      • P(g);SBLOCK,XP(D)::S(F)
      • R(b);N_GUARD::QAR1(I),XP(c)
      • R(e);N_GUARD::QAR2(I)
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