MESON Chess Problem Database

Problem Display
PID: 227720 (1n6/2B2N2/p5K1/2p1NP2/2Pkpp2/3p1Qp1/3P1nP1/8 w - - 0 1)

Raisz, Ivan

Zaszlonk, 1926

1n6/2B2N2/p5K1/2p1NP2/2Pkpp2/3p1Qp1/3P1nP1/8

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qd5#
  • Tries
    • 1.Qxf2+?
      • 1...e3
        • 2.Qxf4#
      • 1...gxf2!
  • Keys
    • 1.Sd6!
      • 1...Kxe5
        • 2.Sb5#
      • 1...exf3
        • 2.Sxf3#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sh1
        • 2.Qxe4#
      • 1...Sh3
        • 2.Qxe4#
      • 1...Sg4
        • 2.Qxe4#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...e3
        • 2.Qd5#
      • 1...a5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATE::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK,XS(a)
      • Vars
        • P(e);OGATEB,P_SPINP(e)::QAR2(C),XP(f)
      • Refutation
        • P(c);XQ(C)
  • Actual
    • S(I);
    • Vars
      • K(d);S_FLIGHT,XS(E)::B(H)+S(I)
      • P(e);XQ(C)::S(E),XP(e)
      • S(a);N_GUARD::QAR1(C),XP(e)
      • S(i);N_GUARD::S(E),XS(i)
      • S(i);N_GUARD::S(E)
      • P(e);OGATE::QAR1(C)
      • P(h);N_GUARD::S(I)
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).