MESON Chess Problem Database

Problem Display
PID: 45711 (7Q/2pBp3/2K2N2/2pnk3/1p1rnpP1/2R2P2/1R6/B7 w - - 0 1)

Tubin, Haran

3rd Prize, Israel Ring Ty., 1976

7Q/2pBp3/2K2N2/2pnk3/1p1rnpP1/2R2P2/1R6/B7

#2

9 + 9

3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Sxd5#
    • 1...Sf2
      • 2.Sxd5#
    • 1...Sexc3
      • 2.Sxd5#
    • 1...Sg3
      • 2.Sxd5#
    • 1...Sg5
      • 2.Sxd5#
    • 1...Sd6
      • 2.Sxd5#
    • 1...Sdxc3
      • 2.Sxe4#
    • 1...Se3
      • 2.Sxe4#
    • 1...Sb6
      • 2.Sxe4#
  • Tries
    • 1.Re2?
      • threat
        • 2.Sxd5#
      • 1...Sxc3
        • 2.Sxe4#
        • 2.Sd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...Sxf6
        • 2.Rxc5#
      • 1...Se3
        • 2.Sxe4#
      • 1...Sb6
        • 2.Sxe4#
        • 2.Sd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...exf6!
    • 1.Qh5+?
      • 1...Sg5
        • 2.Qxg5#
      • 1...Kxf6!
  • Keys
    • 1.Rxc5!
      • threat
        • 2.Sxe4#
      • 1...Sxc5
        • 2.Sxd5#
      • 1...Sxf6
        • 2.Re2#
      • 1...exf6
        • 2.Qe8#
      • 1...Sd2
        • 2.Se4#
        • 2.Sxd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...Sf2
        • 2.Se4#
        • 2.Sxd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...Sc3
        • 2.Se4#
        • 2.Sxd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...Sg3
        • 2.Se4#
        • 2.Sxd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...Sg5
        • 2.Se4#
        • 2.Sxd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...Sd6
        • 2.Se4#
        • 2.Sxd5#
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • S(c);N_GUARD::QAB(I)+S(G),XS(f)
    • S(c);N_GUARD,XR(C)::QAB(I)+S(G),XS(f)
    • S(f);N_GUARD,XR(C)::QAB(I)+S(G),XS(c)
    • S(f);N_GUARD::QAB(I)+S(G),XS(c)
  • Tries
    • Try
      • R(B);P_PINS(c)
      • Threat
        • QAB(I)+S(G),XS(f)
      • Vars
        • S(f);OGATEB,XS(G)::R(C),XP(e)
        • S(f);N_GUARD,N_SPINS(c)::QAB(I)+S(G),XS(c)
      • Refutation
        • P(i);P_SPINP(i),XS(G)
    • Try
      • Q(I);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(I),XS(c)
      • Refutation
        • K(g);S_FLIGHT,XS(G)
  • Actual
    • R(C);P_PINS(f),XP(e)
    • Threat
      • QAB(I)+S(G),XS(c)
    • Vars
      • S(c);N_GUARD,N_SPINS(f),XR(C)::QAB(I)+S(G),XS(f)
      • S(c);OGATEB,XS(G)::R(B)
      • P(i);OGATEB,P_SPINP(i),SBLOCK,XS(G)::QAR(I)
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