MESON Chess Problem Database

Problem Display
PID: 10508 (3Q3K/2p2P2/1nr3p1/2b1k3/3NN1R1/1B3bP1/1q2rR2/B5n1 w - - 0 1)

Retter, Yosef

Tubin, Haran

4th Prize, Israel Ring Ty., 1965

3Q3K/2p2P2/1nr3p1/2b1k3/3NN1R1/1B3bP1/1q2rR2/B5n1

#2

10 + 10

3772 FIDE Album (1965-1967) 1976
3841 The Art of Israeli Chess Composition 1983
3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Qg5#
    • 1...Qxd4
      • 2.Qg5#
    • 1...Qb1
      • 2.Qg5#
    • 1...Qa2
      • 2.Qg5#
    • 1...Qc2
      • 2.Qg5#
    • 1...Qxb3
      • 2.Qg5#
    • 1...Rxe4
      • 2.Rg5#
    • 1...Rf6
      • 2.Qxf6#
    • 1...Bh1
      • 2.Sxc6#
    • 1...Bg2
      • 2.Sxc6#
    • 1...Bxd4
      • 2.Qg5#
    • 1...Bd6
      • 2.Qf6#
    • 1...Sa4
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sa8
      • 2.Qd5#
    • 1...Sc8
      • 2.Qd5#
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe7#
      • 1...Qxb3
        • 2.Rg5#
      • 1...Rxd6
        • 2.Qg5#
      • 1...Bxg4
        • 2.Sxc6#
        • 2.Qf6#
      • 1...Bxd6
        • 2.Qg5#
      • 1...Re4
        • 2.Sxc6#
      • 1...Be4
        • 2.Qf6#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Bd5
        • 2.Qf6#
      • 1...Sd5
        • 2.Sc4#
      • 1...Sc8
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • Q(b);::QAR2(I)
    • Q(b);P_SPINQ(b),XS(E)::QAR2(I)
    • Q(b);XB(C)::QAR2(I)
    • R(c);SBLOCK,XS(F)::R(G)
    • R(h);N_GUARD::QAB1(I),XR(h)
    • B(d);::S(E),XR(h)
    • B(e);SBLOCK,XS(E)::QAR2(I)
    • B(e);S_CUTR(h)::QAB1(I)
    • S(g);N_GUARD::QAR1(I)
    • S(g);N_GUARD::QAR1(I),XS(g)
  • Actual
    • S(F);
    • Threat
      • QAR2(I)
    • Vars
      • Q(b);XB(C)::R(G)
      • R(h);SBLOCK,XS(F)::QAR2(I)
      • B(e);SBLOCK,XS(F)::QAR2(I)
      • R(c);S_CUTB(d)::S(E),XR(h)
      • B(d);::QAB1(I)
      • S(g);N_GUARD::S(F),XS(g)
      • S(g);N_GUARD::S(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).