MESON Chess Problem Database

Problem Display
PID: 176492 (1B6/8/2q1R3/4p3/2p1rk1K/2p2N2/6P1/1B1Q4 w - - 0 1)

Seidel, Manfred

Schach-Echo, 1983

1B6/8/2q1R3/4p3/2p1rk1K/2p2N2/6P1/1B1Q4

#2

7 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.g3#
  • Tries
    • 1.Qc1+?
      • 1...Re3
        • 2.Bxe5#
      • 1...Kf5+!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Qf3#
      • 1...Ke3+
        • 2.Sg4#
      • 1...Kf5+
        • 2.Qg4#
      • 1...Rxe5
        • 2.Qc1#
      • 1...Re1
        • 2.Sg6#
      • 1...Re2
        • 2.Sg6#
      • 1...Re3
        • 2.Sg6#
        • 2.Qg4#
      • 1...Rd4
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(c);SBLOCK::P(C)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(c);P_SPINR(c)::B(G),XP(e)
      • Refutation
        • K(d);CHECK,N_SPINP(e),P-FLIGHT,P_SPINR(c)
  • Actual
    • S(D);XP(e)
    • Threat
      • QAR1(B)
    • Vars
      • K(d);CHECK,S_FLIGHT::S(D)
      • K(d);CHECK,P-FLIGHT,P_SPINR(c)::QAB1(B)
      • R(c);N_GUARD,P_SPINR(c),XS(D)::QAB(B)
      • R(c);::B(G)+S(D),DCHECK
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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).