MESON Chess Problem Database

Problem Display
PID: 105423 (2r5/P4p1B/KP1Q4/BpPpp3/2Nk1n2/4p1bR/b1R2NP1/8 w - - 0 1)

Erokhin, Vladimir Alekseevich

Sachove umeni (Ceskoslovensky sach), 1979

2r5/P4p1B/KP1Q4/BpPpp3/2Nk1n2/4p1bR/b1R2NP1/8

#2

12 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Qxe5#
    • 1...Bxc4
      • 2.Bc3#
    • 1...bxc4
      • 2.Bc3#
  • Tries
    • 1.Kxb5?
      • threat
        • 2.Bc3#
        • 2.Qxe5#
      • 1...Rxc5+
        • 2.Qxc5#
      • 1...Bxc4+
        • 2.Rxc4#
      • 1...Sxg2
        • 2.Bc3#
      • 1...Sxh3
        • 2.Bc3#
      • 1...Re8
        • 2.Bc3#
      • 1...Sd3
        • 2.Bc3#
      • 1...Sh5
        • 2.Bc3#
      • 1...Se6
        • 2.Bc3#
      • 1...Sg6
        • 2.Bc3#
      • 1...e4
        • 2.Bc3#
        • 2.Qe5#
        • 2.Qf6#
      • 1...f6
        • 2.Bc3#
      • 1...Se2!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sf5#
      • 1...Kxe3
        • 2.Qxe5#
      • 1...Bxf2
        • 2.Bc3#
      • 1...f5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(j);SBLOCK,XP(G)::QAB1(J),XP(h)
    • B(a);SBLOCK,XS(E)::B(F)
    • P(f);SBLOCK,XS(E)::B(F)
  • Tries
    • Try
      • K(H);S_FLIGHT,XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(j);CHECK,OGATE,XP(G)::QAB1(J),XR(j)
        • B(a);CHECK,OGATE,XS(E)::R1(A),XB(a)
        • S(e);XP(C)::B(F)
        • S(e);XR(D)::B(F)
        • R(j);::B(F)
        • S(e);::B(F)
        • P(i);::B(F)
      • Refutation
        • S(e);
  • Actual
    • S(E);XP(b)
    • Threat
      • S(E)
    • Vars
      • K(d);N_SPINP(g),P_SPINB(c),S_FLIGHT,XS(E)::QAR2(J),XP(h)
      • B(c);XS(B)::B(F)
      • P(i);::S(E),XP(i)
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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).