MESON Chess Problem Database

Problem Display
PID: 270503 (1r6/3pR3/4n2b/8/1p3p2/1K1p4/3Bkp1N/2Q2N2 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Probleemblad, 2022

1r6/3pR3/4n2b/8/1p3p2/1K1p4/3Bkp1N/2Q2N2

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Sg3#
    • 1...d5
      • 2.Rxe6#
    • 1...d6
      • 2.Rxe6#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qd2#
      • 1...d2
        • 2.Qxd2#
      • 1...f3
        • 2.Sg3#
      • 1...bxc3+!
    • 1.Bxb4?
      • threat
        • 2.Qd2#
      • 1...d2
        • 2.Qxd2#
      • 1...f3
        • 2.Sg3#
      • 1...Rxb4+!
    • 1.Bxf4?
      • threat
        • 2.Sg3#
        • 2.Qd2#
      • 1...d2
        • 2.Qxd2#
      • 1...Rg8
        • 2.Qd2#
      • 1...Bxf4!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qd2#
      • 1...Sd4+
        • 2.Bxd4#
      • 1...Sc5+
        • 2.Bxc5#
      • 1...fxe3
        • 2.Sg3#
      • 1...d2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • P(e);N_GUARD::S(B)
    • P(h);N_GUARD::R(F),XS(f)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);::QAR1(A),XP(c)
        • P(e);N_GUARD::S(B)
      • Refutation
        • P(d);CHECK,XB(C)
    • Try
      • B(C);P_SPINB(C),XP(d)
      • Threat
        • QAR1(A)
      • Vars
        • P(c);::QAR1(A),XP(c)
        • P(e);N_GUARD::S(B)
      • Refutation
        • R(i);CHECK,XB(C)
    • Try
      • B(C);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(A),XP(c)
        • R(i);::QAR1(A)
      • Refutation
        • B(g);XB(C)
  • Actual
    • B(C);N_PINS(f)
    • Threat
      • QAR1(A)
    • Vars
      • S(f);CHECK,OGATEB::R(F)+B(C),XS(f)
      • P(e);N_GUARD,XB(C)::S(B)
      • P(c);::QAR1(A),XP(c)
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).