MESON Chess Problem Database

Problem Display
PID: 171994 (2K5/2p2Np1/4P1p1/1R1B1kP1/2N1pP2/1p5P/5R2/2q5 w - - 0 1)

Apro, Laszlo

1st Prize, Magyar Sakkszovetseg TT, 1967

2K5/2p2Np1/4P1p1/1R1B1kP1/2N1pP2/1p5P/5R2/2q5

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Se3#
    • 1...Qa3
      • 2.Se3#
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qxf4
      • 2.Se3#
    • 1...Qa1
      • 2.Se3#
    • 1...Qb1
      • 2.Se3#
    • 1...Qd1
      • 2.Se3#
    • 1...Qf1
      • 2.Se3#
    • 1...Qg1
      • 2.Se3#
    • 1...Qh1
      • 2.Se3#
    • 1...Qc2
      • 2.Se3#
    • 1...c5
      • 2.Scd6#
      • 2.Sfd6#
    • 1...c6
      • 2.Scd6#
      • 2.Sfd6#
  • Keys
    • 1.Kxc7!
      • threat
        • 2.Sd6#
      • 1...Qxf4+
        • 2.Scd6#
      • 1...Qxc4+
        • 2.Bxc4#
      • 1...Qa3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::S(C)
    • Q(a);N_GUARD::S(C),XQ(a)
    • Q(a);N_GUARD,P_SPINQ(a),XP(D)::S(C)
  • Actual
    • K(J);P-FLIGHT,P_SPINS(C),XP(f)
    • Threat
      • S(I)
    • Vars
      • Q(a);CHECK,N_PINS(C),P_SPINQ(a),XP(D)::S(C)
      • Q(a);CHECK,OGATE,XS(C)::R(E)+B(F),XQ(a)
      • Q(a);N_PINS(C)::S(C)
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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).