MESON Chess Problem Database

Problem Display
PID: 36941 (b2N4/2p2PB1/8/1pr1n2R/1rk1NR2/2pn4/2P1Q1K1/8 w - - 0 1)

Selb, Hans

Die Schwalbe, 1953

b2N4/2p2PB1/8/1pr1n2R/1rk1NR2/2pn4/2P1Q1K1/8

#2

9 + 9

3150 Asthetik und Ornamentik im Schachproblem 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxd3#
    • 1...Bxe4+
      • 2.Qxe4#
    • 1...Sf3
      • 2.Sd2#
      • 2.Sd6#
      • 2.Rxc5#
      • 2.Qxd3#
    • 1...Sg4
      • 2.Rxc5#
      • 2.Qxd3#
    • 1...Sc6
      • 2.Sd2#
      • 2.Sd6#
      • 2.Rxc5#
      • 2.Qxd3#
    • 1...Sg6
      • 2.Rxc5#
      • 2.Qxd3#
    • 1...Sd7
      • 2.Qxd3#
    • 1...Sxf7
      • 2.Rxc5#
      • 2.Qxd3#
    • 1...c6
      • 2.Sf6#
  • Keys
    • 1.f8Q!
      • threat
        • 2.Qxc5#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Kd4
        • 2.Qxd3#
      • 1...Kd5
        • 2.Sf6#
      • 1...Rd5
        • 2.Sd2#
      • 1...Rc6
        • 2.Sf6#
      • 1...Sd7
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINS(b),P-FLIGHT,P_SPINS(g)::QAR1(B),XS(b)
    • B(i);CHECK,OGATE,P_SPINB(i),XS(D)::QAR2(B),XB(i)
    • S(g);N_GUARD::QAB1(B),XS(b)
    • P(h);N_PINS(D)::R(E)+S(D)
  • Actual
    • P(G);
    • Threat
      • QAR1(G),XR(f)
    • Vars
      • B(i);CHECK,OGATE,P_SPINB(i),XS(D)::QAR2(B),XB(i)
      • K(d);N_SPINS(b),P-FLIGHT,P_SPINS(g)::QAR1(B),XS(b)
      • K(d);N_PINS(D),N_SPINS(b),P_SPINS(g),S_FLIGHT::S(D)
      • R(f);N_PINS(D),SBLOCK::R(E)+S(D),DCHECK
      • R(f);N_PINS(D)::R(E)+S(D)
      • S(g);N_GUARD::QAB1(B),XS(b)
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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).