MESON Chess Problem Database

Problem Display
PID: 270217 (8/3ppN2/6p1/rR1P1kP1/2B1bN2/3pBP2/1p2P3/1Q3RK1 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Probleemblad, 2020

8/3ppN2/6p1/rR1P1kP1/2B1bN2/3pBP2/1p2P3/1Q3RK1

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Bxd3#
      • 2.Qxd3#
    • 1...dxe2
      • 2.Qxe4#
    • 1...d2
      • 2.Qxe4#
  • Tries
    • 1.Bxd3?
      • threat
        • 2.Bxe4#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Ra4!
    • 1.exd3?
      • threat
        • 2.dxe4#
      • 1...Bxd3
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...Bxd5
        • 2.d4#
      • 1...Bxf3!
    • 1.fxe4+?
      • 1...Kxe4
        • 2.Qxd3#
      • 1...Kg4!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Sh6#
      • 1...Bxd3
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...Bxf3
        • 2.Sde5#
      • 1...Bxd5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(b);OGATE,P_SPINB(c),XP(D)::QAB1(A),XB(c)
    • P(b);OGATE,P_SPINB(c)::QAB1(A),XB(c)
  • Tries
    • Try
      • B(G);P_PINB(c),XP(b)
      • Threat
        • B(G),XB(c)
      • Vars
        • B(c);OGATE,XB(G)::QAB(A),XB(c)
      • Refutation
        • R(d);
    • Try
      • P(D);XP(b)
      • Threat
        • P(D),XB(c)
      • Vars
        • B(c);P_SPINB(c),XP(J)::QAB(A)+P(D)
      • Refutation
        • B(c);XP(F)
    • Try
      • P(F);CHECK,XB(c)
      • Vars
        • K(e);N_GUARD,P_SPINP(b),S_FLIGHT,XP(F)::QAB1(A),XP(b)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(H);XP(b)
    • Threat
      • S(L)
    • Vars
      • B(c);P_SPINB(c),XP(F)::QAB(A)+S(H)
      • B(c);P_SPINB(c),XP(J)::QAB(A)+S(H)
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).