MESON Chess Problem Database

Problem Display
PID: 148284 (1b6/6NK/8/2nrnQp1/qR6/1p2k3/pB1N1p2/rb1R1B2 w - - 0 1)

Goldstein, Alexander

Tuhan-Baranowski, Leon

2nd HM., Weenink MT, 1932

1b6/6NK/8/2nrnQp1/qR6/1p2k3/pB1N1p2/rb1R1B2

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qxg5#
    • 1...Rd4
      • 2.Bxd4#
    • 1...Bxf5+
      • 2.Sxf5#
    • 1...Scd3
      • 2.Qe4#
    • 1...Sed3
      • 2.Sc4#
      • 2.Qf3#
    • 1...Sf3
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...Sg4
      • 2.Sc4#
    • 1...Sc6
      • 2.Sc4#
    • 1...Sg6
      • 2.Sc4#
      • 2.Qf3#
    • 1...Sd7
      • 2.Sc4#
    • 1...Sf7
      • 2.Sc4#
  • Keys
    • 1.Bc1!
      • threat
        • 2.Sc4#
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...Rxd2
        • 2.Bxd2#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Rd3
        • 2.Qxg5#
      • 1...Bd3
        • 2.Sb1#
      • 1...Scd3
        • 2.Qe4#
      • 1...Sed3
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(i);N_PINQ(F)::QAB(F),XP(k)
    • R(i);N_GUARD::B(C),XR(i)
    • B(b);CHECK,XQ(F)::S(G),XB(b)
    • S(h);N_GUARD,N_PINQ(F),S_CUTB(b)::QAR1(F)
    • S(j);N_GUARD::S(D)
    • S(j);N_GUARD::S(D),XS(j)
  • Actual
    • B(C);
    • Threat
      • B(C)+S(D),DCHECK
    • Vars
      • B(b);CHECK,XQ(F)::S(G),XB(b)
      • R(i);OGATE,P_SPINR(i),XS(D)::B(C),XR(i)
      • S(j);::B(C)+S(D),DCHECK,XS(j)
      • R(i);N_PINQ(F)::QAB(F),XP(k)
      • B(b);S_CUTR(i)::B(C)+S(D)
      • S(h);N_GUARD,N_PINQ(F),S_CUTB(b)::QAR1(F)
      • S(j);N_PINQ(F)::QAR1(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).