MESON Chess Problem Database

Problem Display
PID: 102460 (2B5/1KQpr3/5n1R/3k4/2pN1PPq/2P1nP2/8/4R1B1 w - - 0 1)

Wielgos, Oskar

Europe Echecs, 1962

2B5/1KQpr3/5n1R/3k4/2pN1PPq/2P1nP2/8/4R1B1

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxe5#
    • 1...Rf7
      • 2.Qe5#
    • 1...Rg7
      • 2.Qe5#
    • 1...Rh7
      • 2.Qe5#
    • 1...Sxg4
      • 2.Rd6#
      • 2.Qa5#
      • 2.Qd6#
    • 1...Sh5
      • 2.Rd6#
      • 2.Qa5#
      • 2.Qd6#
    • 1...Sh7
      • 2.Rd6#
      • 2.Qa5#
      • 2.Qd6#
    • 1...Se8
      • 2.Qa5#
    • 1...Sg8
      • 2.Rd6#
      • 2.Qa5#
      • 2.Qd6#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Bb7#
        • 2.Qc5#
      • 1...Se4
        • 2.Bb7#
        • 2.Qb7#
      • 1...d6
        • 2.Bb7#
        • 2.Qc6#
      • 1...Re6+!
    • 1.Bxd7?
      • threat
        • 2.Qc6#
      • 1...Re6
        • 2.Bxe6#
      • 1...Rxd7!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qd6#
      • 1...Ke6
        • 2.Qxc4#
      • 1...Sxf5
        • 2.Qc5#
      • 1...Re6
        • 2.Qa5#
      • 1...Se4
        • 2.Sxe3#
      • 1...Se8
        • 2.Qa5#
      • 1...d6
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::QAR1(J),XR(g)
    • R(g);N_GUARD::QAR1(J)
    • S(e);::QAR(J)
  • Tries
    • Try
      • K(I);P-FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • R(g);CHECK
    • Try
      • B(K);XP(f)
      • Threat
        • QAB1(J)
      • Vars
        • R(g);N_GUARD::B(K),XR(g)
      • Refutation
        • R(g);P_PINQ(J),XB(K)
  • Actual
    • S(E);
    • Threat
      • QAR1(J)
    • Vars
      • K(d);P_SPINP(f),P_SPINS(a),S_FLIGHT::QAB(J),XP(b)
      • S(a);XS(E)::QAR1(J)
      • R(g);SBLOCK::QAR(J)
      • S(e);S_CUTR(g)::S(E),XS(a)
      • S(e);::QAR(J)
      • P(f);P_PINQ(J)::S(E),XR(g)
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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).