MESON Chess Problem Database

Problem Display
PID: 218552 (8/8/2p1K1p1/1PB4B/3pkP2/1QP3P1/pb2r1P1/3r4 w - - 0 1)

Courtin, GE

Cincinnati Commercial, 1881

8/8/2p1K1p1/1PB4B/3pkP2/1QP3P1/pb2r1P1/3r4

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Bxg6#
    • 1...dxc3
      • 2.Bxg6#
    • 1...d3
      • 2.Bf3#
      • 2.Bxg6#
      • 2.Qa4#
      • 2.Qc4#
      • 2.Qb4#
  • Keys
    • 1.Qxd1!
      • threat
        • 2.Qxe2#
        • 2.Qxd4#
      • 1...Ke3
        • 2.Qxe2#
        • 2.Qxd4#
      • 1...Rxg2
        • 2.Qf3#
        • 2.Qxd4#
      • 1...Bxc3
        • 2.Qxe2#
      • 1...dxc3
        • 2.Bf3#
        • 2.Bxg6#
        • 2.Qxe2#
        • 2.Qd4#
      • 1...Rd2
        • 2.Qf3#
      • 1...Re1
        • 2.Qf3#
        • 2.Qxd4#
      • 1...Rc2
        • 2.Qf3#
        • 2.Qxd4#
      • 1...Rf2
        • 2.Qxd4#
      • 1...Re3
        • 2.Bxg6#
        • 2.Qxd4#
      • 1...Bc1
        • 2.Qxd4#
      • 1...d3
        • 2.Bf3#
        • 2.Bxg6#
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(d);SBLOCK::B(H),XP(h)
    • P(e);XP(C)::B(H),XP(h)
  • Actual
    • Q(B);XR(a)
    • Threat
      • DUALS(2)
    • Vars
      • B(c);XP(C)::QAR2(B),XR(d)
      • R(d);OGATE::QAB1(B)
      • R(d);::QAR1(B),XP(e)
      • B(c);::QAR1(B),XP(e)
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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).