MESON Chess Problem Database

Problem Display
PID: 204947 (1KnN1R1n/1Ppp1p2/2Pk1p1r/1qp5/2p2P2/4Q3/4b1B1/8 w - - 0 1)

di Scala, Pascal

Phenix, 1994

1KnN1R1n/1Ppp1p2/2Pk1p1r/1qp5/2p2P2/4Q3/4b1B1/8

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.bxc8S#
    • 1...Qxc6
      • 2.bxc8S#
    • 1...Qa5
      • 2.bxc8S#
    • 1...Qxb7+
      • 2.Sxb7#
    • 1...Sg6
      • 2.Sxf7#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Qxc5+?
      • 1...Qxc5
        • 2.bxc8S#
      • 1...Kxc5!
  • Keys
    • 1.Rxf7!
      • threat
        • 2.Rxd7#
      • 1...Qxb7+
        • 2.Sxb7#
      • 1...Qxc6
        • 2.bxc8S#
      • 1...Sxf7
        • 2.Sxf7#
      • 1...dxc6
        • 2.Qe6#
      • 1...Rh7
        • 2.Rxf6#
      • 1...Bg4
        • 2.Qd2#
      • 1...Sb6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_PINP(E)::PXS(k)=S
    • Q(c);N_PINP(E),XP(D)::PXS(k)=S
    • Q(c);CHECK,XP(E)::S(G),XQ(c)
    • S(l);N_GUARD::S(G),XP(j)
    • P(f);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK,XP(d)
      • Vars
        • Q(c);N_PINP(E),SBLOCK,XQ(B)::PXS(k)=S
      • Refutation
        • K(e);S_FLIGHT,XQ(B)
  • Actual
    • R(H);XP(j)
    • Threat
      • R1(H),XP(i)
    • Vars
      • Q(c);CHECK,XP(E)::S(G),XQ(c)
      • Q(c);N_PINP(E),XP(D)::PXS(k)=S
      • S(l);XR(H)::S(G),XS(l)
      • P(i);N_GUARD,XP(D)::QAR1(B)
      • R(g);N_GUARD::R(H),XP(f)
      • B(a);N_GUARD::QAR(B)
      • S(k);N_GUARD,N_PINP(E)::QAB1(B)
      • S(k);N_GUARD::QAB1(B),XS(k)
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).