MESON Chess Problem Database

Problem Display
PID: 77923 (1q1R4/1Rbb1N2/1np5/6QK/n1k1N1p1/PrBrP3/P7/5B2 w - - 0 1)

Ancin, Andrej

3rd Prize, Tyovaen Shakki, 1936

1q1R4/1Rbb1N2/1np5/6QK/n1k1N1p1/PrBrP3/P7/5B2

#2

11 + 10

422 Suomen Tehtavaniekat 2007
14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Sd2#
    • 1...Bf5
      • 2.Bxd3#
    • 1...Be6
      • 2.Bxd3#
      • 2.Rd4#
    • 1...Bc8
      • 2.Bxd3#
      • 2.Rd4#
    • 1...Be8
      • 2.Bxd3#
      • 2.Rd4#
    • 1...Sb2
      • 2.Qc5#
    • 1...Sxc3
      • 2.Sd2#
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sd5
      • 2.axb3#
    • 1...Sa8
      • 2.axb3#
    • 1...Sc8
      • 2.axb3#
  • Keys
    • 1.Qg8!
      • threat
        • 2.Sfd6#
      • 1...Rb5+
        • 2.Se5#
      • 1...Kb5
        • 2.Bxd3#
      • 1...Kd5
        • 2.Sfg5#
      • 1...Bd6
        • 2.Sfxd6#
      • 1...Be6
        • 2.Bxd3#
      • 1...Be8
        • 2.Bxd3#
      • 1...Sd5
        • 2.axb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • R(a);SBLOCK,XB(D)::S(F)
    • B(i);::B(A),XR(b)
    • S(c);N_GUARD::QAR1(G)
    • S(c);N_GUARD::QAR1(G),XS(c)
    • S(f);::P(B),XR(a)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+S(J),DCHECK
    • Vars
      • R(a);CHECK,SBLOCK::QAB(G)+S(J),DCHECK
      • K(d);P_SPINS(f),S_FLIGHT::B(A),XR(b)
      • K(d);N_SPINR(b),P_SPINB(i),S_FLIGHT::QAB(G)+S(J)
      • B(h);::QAB(G)+S(J),DCHECK,XB(h)
      • B(i);::B(A),XR(b)
      • B(i);P_PINS(J)::B(A),XR(b)
      • S(f);SBLOCK::P(B),XR(a)
HTML5 logo

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).