MESON Chess Problem Database

Problem Display
PID: 7663 (6B1/5QP1/3prpP1/KNN2k1P/1p6/4PPB1/6R1/b3r3 w - - 0 1)

Erokhin, Vladimir Alekseevich

1/3 Prize, Sachove umeni (Ceskoslovensky sach), 1992

6B1/5QP1/3prpP1/KNN2k1P/1p6/4PPB1/6R1/b3r3

#2

12 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • threat
        • 2.Qxe6#
      • 1...Re5
        • 2.Qxf6#
      • 1...Re7
        • 2.Sbxd6#
      • 1...Re8
        • 2.Sbxd6#
      • 1...Rxe4!
    • 1.Sxe6?
      • threat
        • 2.Sxd6#
      • 1...Rd1
        • 2.e4#
      • 1...d5
        • 2.Sd6#
      • 1...Be5!
    • 1.Bh2?
      • threat
        • 2.Qxe6#
      • 1...R6xe3
        • 2.Sxd6#
      • 1...Re4
        • 2.Sxd6#
        • 2.fxe4#
      • 1...Re5
        • 2.Sxd6#
      • 1...Re7
        • 2.Sxd6#
      • 1...Re8
        • 2.Sxd6#
      • 1...R1xe3!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qxe6#
      • 1...Kxe5
        • 2.Qxe6#
      • 1...Rxe5
        • 2.Sxd6#
      • 1...Re7
        • 2.Qxf6#
      • 1...Re8
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • QAB1(J),XR(f)
      • Vars
        • R(f);N_GUARD,P_PINS(F),S_CUTB(a)::QAR1(J),XP(g)
        • R(f);N_GUARD::S(F),XP(e)
      • Refutation
        • R(f);XS(G)
    • Try
      • S(G);XR(f)
      • Threat
        • S(F),XP(e)
      • Vars
        • R(b);N_GUARD::P(B)
        • P(e);::S(F)
      • Refutation
        • B(a);
    • Try
      • B(D);
      • Threat
        • QAB1(J),XR(f)
      • Vars
        • R(f);N_GUARD,XP(B)::S(F),XP(e)
        • R(f);N_GUARD::S(F),XP(e)
      • Refutation
        • R(b);XP(B)
  • Actual
    • B(D);
    • Threat
      • QAB1(J),XR(f)
    • Vars
      • K(d);N_SPINP(g),P-FLIGHT,XB(D)::QAR1(J),XR(f)
      • R(f);N_GUARD,SBLOCK,XB(D)::S(F),XP(e)
      • R(f);N_GUARD::QAR1(J),XP(g)
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).