MESON Chess Problem Database

Problem Display
PID: 273990 (5R2/2B2q2/2rnQ3/2p1n3/R1N1bk1P/3P1p2/K4P2/8 w - - 0 1)

Arnstam, Knut Anders Olof

3rd HM., Schackvarlden, 1941

5R2/2B2q2/2rnQ3/2p1n3/R1N1bk1P/3P1p2/K4P2/8

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sexc4
      • 2.Qxe4#
    • 1...Sg4
      • 2.Qxe4#
    • 1...Sg6
      • 2.Qxe4#
    • 1...Sd7
      • 2.Qxe4#
    • 1...Sb5
      • 2.Bxe5#
    • 1...Sb7
      • 2.Bxe5#
    • 1...Sc8
      • 2.Bxe5#
    • 1...Se8
      • 2.Bxe5#
  • Keys
    • 1.Se3!
      • threat
        • 2.Sd5#
      • 1...Qf5
        • 2.Qh6#
      • 1...Sec4
        • 2.Qxe4#
      • 1...Sdc4
        • 2.Qg4#
      • 1...Sf5
        • 2.Bxe5#
        • 2.Rxe4#
      • 1...c4
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • S(e);OGATE,P_SPINS(g),XS(E)::QAR1(G),XB(b)
    • S(e);OGATE,P_SPINS(g),SBLOCK::QAR1(G),XB(b)
    • S(e);OGATE,P_SPINS(g)::QAR1(G),XB(b)
    • S(g);OGATE,P_SPINS(e)::B(H),XS(e)
  • Actual
    • S(E);P_PINB(b),P_SPINQ(G)
    • Threat
      • S(E)
    • Vars
      • Q(h);N_PINQ(G)::QAB(G)
      • S(e);N_PINQ(G),N_SPINB(b),P_SPINS(g)::QAR1(G),XB(b)
      • S(g);N_PINQ(G),N_SPINB(b),P_SPINS(e)::QAR1(G)
      • P(d);N_PINQ(G),N_SPINB(b)::QAB(G)
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).