MESON Chess Problem Database

Problem Display
PID: 120615 (2N1R3/1r1p3B/2p5/b1pk1b2/5P2/4p3/1pP1N2K/1Q6 w - - 0 1)

Jensen, Thomas

Source?, 0000

2N1R3/1r1p3B/2p5/b1pk1b2/5P2/4p3/1pP1N2K/1Q6

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Bg8#
    • 1...Bd3
      • 2.Bg8#
    • 1...Be4
      • 2.Bg8#
    • 1...c4
      • 2.Re5#
  • Tries
    • 1.Qa2+?
      • 1...c4
        • 2.Re5#
      • 1...Rb3!
    • 1.Qh1+?
      • 1...Be4
        • 2.Bg8#
        • 2.Qxe4#
      • 1...Kc4!
  • Keys
    • 1.Re4!
      • threat
        • 2.c4#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Bxe4
        • 2.Bg8#
      • 1...c4
        • 2.Re5#
      • 1...Rb4
        • 2.Sc3#
      • 1...Bc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(f);N_GUARD,XP(B)::B(F)
    • B(f);N_GUARD::B(F)
    • P(d);SBLOCK::R1(H)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • P(d);P_SPINP(d)::R1(H)
      • Refutation
        • R(h);P_SPINR(h)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(H);
    • Threat
      • P(B)
    • Vars
      • K(e);OGATEB,P_SPINB(f),S_FLIGHT,XR(H)::QAB(A)
      • B(f);N_GUARD,SBLOCK,XR(H)::B(F)
      • P(d);SBLOCK::R1(H)
      • R(h);S_CUTB(c)::S(C)
      • B(c);N_GUARD::S(C),XB(c)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).