MESON Chess Problem Database

Problem Display
PID: 86393 (4N3/4pB1p/R1P1P3/1p4p1/1K2k3/3p4/2p3N1/B4Q2 w - - 0 1)

Gordian, Yury Markovic

64 Shakhmatnoe obozrenie, 1970

4N3/4pB1p/R1P1P3/1p4p1/1K2k3/3p4/2p3N1/B4Q2

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxd3#
      • 2.Qf3#
      • 2.Qf5#
  • Tries
    • 1.Sd6+?
      • 1...Kd5
        • 2.Qxd3#
      • 1...exd6!
    • 1.Bh5?
      • threat
        • 2.Qf3#
      • 1...Kd5
        • 2.Qf5#
      • 1...g4!
    • 1.Bg6+?
      • 1...Kd5
        • 2.Qf5#
      • 1...hxg6!
    • 1.Ra3?
      • threat
        • 2.Qxd3#
      • 1...Kd5
        • 2.Qf3#
      • 1...d2
        • 2.Qd3#
        • 2.Qf3#
      • 1...c1S!
    • 1.Qe2+?
      • 1...Kd5
        • 2.Qxd3#
        • 2.Qf3#
        • 2.Qe5#
      • 1...Kf5
        • 2.Sg7#
        • 2.Qf3#
      • 1...dxe2!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Se3#
        • 2.Sc7#
        • 2.Qe5#
        • 2.Qf3#
        • 2.Qd4#
        • 2.Qf5#
      • 1...gxf4!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(B),XP(b)
      • Refutation
        • P(f);XS(I)
    • Try
      • B(H);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);S_FLIGHT::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • B(H);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(B)
      • Refutation
        • P(g);XB(H)
    • Try
      • R(E);
      • Threat
        • QAB1(B),XP(b)
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(e);XQ(B)
  • Actual
    • S(I);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);S_FLIGHT::QAR2(B),XP(b)
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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).