MESON Chess Problem Database

Problem Display
PID: 156955 (B4r2/2B1PQ2/1PR1K1P1/2P5/5pNR/2N2k2/3p2pP/2b1n1r1 w - - 0 1)

Degener, Udo

Troll, 2015

B4r2/2B1PQ2/1PR1K1P1/2P5/5pNR/2N2k2/3p2pP/2b1n1r1

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf7
      • 2.Rd6#
    • 1...Rxa8
      • 2.Qxf4#
    • 1...Rb8
      • 2.Qxf4#
    • 1...Rc8
      • 2.Qxf4#
    • 1...Rd8
      • 2.Qxf4#
    • 1...Re8
      • 2.Qxf4#
    • 1...Rg8
      • 2.Qxf4#
    • 1...Rh8
      • 2.Qxf4#
  • Keys
    • 1.Kf5!
      • threat
        • 2.Rh3#
      • 1...Rxf7+
        • 2.Rf6#
      • 1...Rh8
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • R(h);N_GUARD,N_SPINP(g),XQ(L)::B(M)+R(G)
    • R(h);N_GUARD,XB(M)::QAR1(L),XP(g)
    • R(h);N_GUARD::QAR1(L),XP(g)
    • R(h);N_GUARD,P_PINP(K)::QAR1(L),XP(g)
  • Actual
    • K(H);N_PINP(g),P_SPINQ(L),S_FLIGHT
    • Threat
      • R(D)
    • Vars
      • R(h);CHECK,N_GUARD,XQ(L)::B(M)+R(G)
      • R(h);N_PINQ(L)::QAB(L)
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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).