Problem Display
PID: 239250 (2R5/3KQ1p1/1p2pp2/3NN2p/2PPk3/2p2pBB/2P2P2/1b6 w - - 0 1)

Labai, Zoltan

Sachove umeni (Ceskoslovensky sach), 2012

2R5/3KQ1p1/1p2pp2/3NN2p/2PPk3/2p2pBB/2P2P2/1b6

#2

11 + 9


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Sets
    • 1...exd5
      • 2.Sc6#
    • 1...fxe5
      • 2.Qh4#
  • Tries
    • 1.Sxf6+?
      • 1...Kxd4
        • 2.Sxf3#
        • 2.Qd6#
      • 1...gxf6!
    • 1.Sc6?
      • threat
        • 2.Sxc3#
        • 2.Qxe6#
      • 1...e5
        • 2.Sxc3#
      • 1...Bxc2!
    • 1.Bf5+?
      • 1...Kxd4
        • 2.Sxf3#
      • 1...exf5
        • 2.Sc6#
      • 1...Kxf5!
    • 1.Qc5?
      • threat
        • 2.Sxc3#
      • 1...exd5
        • 2.Qxd5#
      • 1...bxc5!
    • 1.Qxe6?
      • threat
        • 2.Sc6#
      • 1...Kxd4
        • 2.Sxf3#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Bxc2!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sxc3#
      • 1...Kxd4
        • 2.Sxf6#
      • 1...exd5
        • 2.Qxd5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(g);XS(G)::QAR(J)+S(H)
    • P(h);OGATE,XS(H)::QAR(J)
  • Tries
    • Try
      • S(G);CHECK,XP(h)
      • Refutation
        • P(i);XS(G)
    • Try
      • S(H);P_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);::S(G),XP(b)
      • Refutation
        • B(a);XP(A)
    • Try
      • B(D);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(F)::S(H),XP(c)
        • P(g);SBLOCK,XB(D)::QAR(J)+S(H)
      • Refutation
        • K(d);S_FLIGHT,XB(D)
    • Try
      • Q(J);
      • Threat
        • S(G),XP(b)
      • Vars
        • P(g);OGATE,XS(G)::QAB1(J),XP(g)
      • Refutation
        • P(f);XQ(J)
    • Try
      • Q(J);XP(g)
      • Threat
        • QAR(J)+S(H)
      • Vars
        • K(d);P-FLIGHT,XP(F)::S(H),XP(c)
        • P(h);OGATE,P_SPINP(h),XS(H)::QAR1(J),XP(h)
      • Refutation
        • B(a);XP(A)
  • Actual
    • Q(J);
    • Threat
      • S(G),XP(b)
    • Vars
      • K(d);P-FLIGHT,XP(F)::QAR(J)+S(G),XP(h)
      • P(g);OGATE,XS(G)::QAB1(J),XP(g)


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).