MESON Chess Problem Database

Problem Display
PID: 172106 (8/Bb1R4/1r6/3nkP2/R1nNN3/4p1P1/1p2Q3/1B4K1 w - - 0 1)

Apro, Laszlo

3rd Comm., Mat, 1974

8/Bb1R4/1r6/3nkP2/R1nNN3/4p1P1/1p2Q3/1B4K1

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qxb2#
  • Tries
    • 1.Re7+?
      • 1...Kxd4
        • 2.Rxc4#
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qxc4#
      • 1...Re6
        • 2.Rxe6#
      • 1...Sxe7!
    • 1.Qg4?
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qg7#
      • 1...Sd2!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qh8#
      • 1...Sd2
        • 2.f6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);OGATEB,P_SPINR(f),P_SPINS(c),S_FLIGHT,XS(F)::QAB(C),XP(a)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::R1(J),XR(f)
      • Refutation
        • S(d);XR(J)
    • Try
      • Q(C);
      • Threat
        • S(F)
      • Vars
        • K(e);P_SPINR(f),P_SPINS(c),S_FLIGHT,XS(F)::QAB(C)
      • Refutation
        • S(c);
  • Actual
    • Q(C);
    • Threat
      • S(F)
    • Vars
      • K(e);P_SPINR(f),P_SPINS(c),S_FLIGHT,XS(F)::QAB(C)
      • S(c);::QAR(C)+P(H)
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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).