MESON Chess Problem Database

Problem Display
PID: 255807 (8/8/8/8/3bQ3/8/2RB4/2qk1K2 w - - 0 1)

Kirichenko, Anatoly Yakovlevich

6th Prize, Astafyeva-30 JT (Lightweights) (Kudesnik), 2021

8/8/8/8/3bQ3/8/2RB4/2qk1K2

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc2
      • 2.Qe1#
      • 2.Qe2#
  • Tries
    • 1.Bxc1?
      • threat
        • 2.Qd3#
        • 2.Qe2#
      • 1...Bc3
        • 2.Qe2#
      • 1...Be3!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Bxc1#
        • 2.Rxc1#
      • 1...Qxd2
        • 2.Qxd2#
      • 1...Qxc2
        • 2.Qe2#
      • 1...Qb2
        • 2.Bc1#
        • 2.Be1#
        • 2.Bc3#
        • 2.Be3#
        • 2.Bb4#
        • 2.Bf4#
        • 2.Ba5#
        • 2.Bg5#
        • 2.Bh6#
      • 1...Qa3
        • 2.Bc3#
      • 1...Qa1
        • 2.Bc1#
        • 2.Be1#
        • 2.Bc3#
        • 2.Be3#
        • 2.Bb4#
        • 2.Bf4#
        • 2.Ba5#
        • 2.Bg5#
        • 2.Bh6#
      • 1...Qb1
        • 2.Bc1#
        • 2.Be1#
        • 2.Bc3#
        • 2.Be3#
        • 2.Bb4#
        • 2.Bf4#
        • 2.Ba5#
        • 2.Bg5#
        • 2.Bh6#
      • 1...Bb2
        • 2.Bxc1#
      • 1...Bc3
        • 2.Rxc1#
      • 1...Be3
        • 2.Rxc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);XQ(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAB1(D)
      • Refutation
        • B(c);
  • Actual
    • Q(D);
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);OGATE,P_SPINQ(a),XB(C)::QAR1(D),XQ(a)
      • Q(a);SBLOCK,XR(B)::QAB1(D)
      • Q(a);N_GUARD::QAR(D)+B(C)
      • B(c);::QAR(D)+B(C),XQ(a)
      • B(c);::R1(B),XQ(a)
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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).