MESON Chess Problem Database

Problem Display
PID: 45889 (8/2B1p1Q1/4r3/5kN1/2P1N2p/1B2p1nK/2qn2P1/3rb3 w - - 0 1)

Lubton, Yehuda

Themes-64, 1981

8/2B1p1Q1/4r3/5kN1/2P1N2p/1B2p1nK/2qn2P1/3rb3

#2

8 + 10

3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qf7#
    • 1...Rg6
      • 2.Qe5#
  • Tries
    • 1.Sh7?
      • threat
        • 2.Qg4#
      • 1...Kxe4
        • 2.Bxc2#
      • 1...Qxe4
        • 2.Qg5#
      • 1...Rxe4
        • 2.Qf7#
      • 1...Rg6
        • 2.Qe5#
      • 1...Rd6!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qg4#
      • 1...Kxe4
        • 2.Bxc2#
      • 1...Qxe4
        • 2.Qg5#
      • 1...Rxe4
        • 2.Qf7#
      • 1...Sdxe4
        • 2.Sxh4#
      • 1...Sgxe4
        • 2.Sd4#
      • 1...Rg6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(i);N_GUARD::QAR2(H)
    • R(i);N_GUARD,SBLOCK::QAR1(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(H)
      • Vars
        • K(h);OGATEB,S_FLIGHT,XS(E)::B(B),XQ(c)
        • Q(c);SBLOCK,XS(E)::QAR1(H)
        • R(i);N_GUARD,SBLOCK,XS(E)::QAR2(H)
        • R(i);N_GUARD,SBLOCK::QAR1(H)
      • Refutation
        • R(i);
  • Actual
    • S(F);
    • Threat
      • QAB1(H)
    • Vars
      • K(h);OGATEB,S_FLIGHT,XS(E)::B(B),XQ(c)
      • Q(c);SBLOCK,XS(E)::QAR1(H)
      • R(i);N_GUARD,SBLOCK,XS(E)::QAR2(H)
      • S(d);SBLOCK,XS(E)::S(F),XP(g)
      • S(f);SBLOCK,XS(E)::S(F)
      • R(i);N_GUARD,SBLOCK::QAR1(H)
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