MESON Chess Problem Database

Problem Display
PID: 182534 (4b3/2K1Np2/2p2Qn1/N2Pnp2/1P1kp3/4pp1q/1PP4b/8 w - - 0 1)

Kele, Janos

Bulletin Ouvrier des Echecs, 1953

4b3/2K1Np2/2p2Qn1/N2Pnp2/1P1kp3/4pp1q/1PP4b/8

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...cxd5
      • 2.Qb6#
  • Tries
    • 1.Sxf5+?
      • 1...Kxd5
        • 2.Qd6#
      • 1...Qxf5!
    • 1.Sexc6+?
      • 1...Kxd5
        • 2.Qd6#
      • 1...Bxc6!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qc5#
        • 2.dxc6#
      • 1...Sxe7
        • 2.Qc5#
      • 1...cxd5
        • 2.Qc5#
        • 2.Qxd5#
        • 2.Qb6#
      • 1...e2
        • 2.Qc5#
      • 1...Sd3
        • 2.c3#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sg4
        • 2.Sxf5#
      • 1...Sd7
        • 2.Sexc6#
      • 1...Sf4
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • P(i);OGATE,XP(E)::QAB(F)
  • Tries
    • Try
      • S(H);CHECK,XP(h)
      • Vars
        • K(e);N_SPINS(g),P-FLIGHT,XP(E)::QAR1(F)
      • Refutation
        • Q(d);XS(H)
    • Try
      • S(H);CHECK,XP(i)
      • Vars
        • K(e);N_SPINS(g),P-FLIGHT,XP(E)::QAR1(F)
      • Refutation
        • B(l);XS(H)
  • Actual
    • Q(F);N_PINS(g)
    • Threat
      • DUALS(2)
    • Vars
      • S(j);XS(H)::QAB1(F)
      • P(b);::QAB1(F)
      • S(g);P_PINQ(F),SBLOCK::P(B)
      • S(g);P_PINQ(F),SBLOCK::S(D)
      • S(g);P_PINQ(F),S_CUTQ(d)::S(H),XP(h)
      • S(g);N_GUARD,P_PINQ(F),S_CUTB(l)::S(H),XP(i)
      • S(j);::QAB1(F)
      • P(i);::QAB1(F),XP(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).