MESON Chess Problem Database

Problem Display
PID: 243339 (1q3r2/3B1n2/1pP2p2/1RPkp2N/N2P1bnr/1PP1p3/K1Q5/8 w - - 0 1)

Apro, Laszlo

Schach, 1954

1q3r2/3B1n2/1pP2p2/1RPkp2N/N2P1bnr/1PP1p3/K1Q5/8

#2

11 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sxb6#
    • 1...Qc8
      • 2.Sxb6#
    • 1...Qe8
      • 2.Sxb6#
    • 1...Sf2
      • 2.Sxf6#
    • 1...Sh2
      • 2.Sxf6#
    • 1...Sgh6
      • 2.Sxf6#
  • Keys
    • 1.dxe5!
      • threat
        • 2.cxb6#
      • 1...Kxe5
        • 2.Qf5#
      • 1...Qxe5
        • 2.Sxb6#
      • 1...Bxe5
        • 2.Qg2#
      • 1...Sgxe5
        • 2.Sxf6#
      • 1...Sfxe5
        • 2.Sxf4#
      • 1...bxc5
        • 2.Rxc5#
      • 1...fxe5
        • 2.Qd3#
      • 1...Qd6
        • 2.cxd6#
      • 1...Sd6
        • 2.cxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 5
  • Sets
    • Q(j);N_GUARD::S(E),XP(g)
    • S(c);N_GUARD::S(I),XP(h)
  • Actual
    • P(F);XP(f)
    • Threat
      • R(G)+P(H),XP(g)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XP(F)::QAR1(B)
      • Q(j);N_GUARD,SBLOCK,XP(F)::S(E),XP(g)
      • B(b);SBLOCK,XP(F)::QAB(B)
      • S(c);N_GUARD,SBLOCK,XP(F)::S(I),XP(h)
      • S(i);SBLOCK,XP(F)::S(I),XB(b)
      • P(g);OGATE,P_SPINP(g),XP(H)::R1(G),XP(g)
      • P(h);SBLOCK,XP(F)::QAR2(B)
      • Q(j);OGATE::R(G)+P(H),XQ(j)
      • S(i);OGATE::R(G)+P(H),XS(i)
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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).