MESON Chess Problem Database

Problem Display
PID: 206393 (8/8/2pr4/6p1/KPQ4B/4b3/Np1P4/1r1k2N1 w - - 0 1)

Kartsev, Nikola

Comm., Shakhmaty, 1925

8/8/2pr4/6p1/KPQ4B/4b3/Np1P4/1r1k2N1

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd2
      • 2.Qe2#
    • 1...Bxd2
      • 2.Qb3#
  • Tries
    • 1.Qf1+?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Kc2!
    • 1.Qg4+?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Kc2!
    • 1.dxe3?
      • threat
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Rd2!
  • Keys
    • 1.d4!
      • threat
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
      • 1...Bxg1
        • 2.Qd3#
      • 1...Bd2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XP(C)::QAR1(F)
    • B(d);SBLOCK,XP(C)::QAB(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(C);XB(d)
      • Threat
        • QAB1(F)
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
        • R(g);N_GUARD::QAR2(F),XR(g)
      • Refutation
        • R(g);
  • Actual
    • P(C);
    • Threat
      • QAB1(F)
    • Vars
      • K(b);P-FLIGHT::QAR1(F)
      • B(d);N_GUARD,XS(A)::QAR2(F)
      • B(d);SBLOCK::QAB(F)
HTML5 logo

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).