MESON Chess Problem Database

Problem Display
PID: 180082 (8/1Kn2Nq1/Rb2RpP1/r2pPkBB/5Pp1/1Q3P2/1rp5/7b w - - 0 1)

Bukne, Roald

Shakhmaty v SSSR, 1948

8/1Kn2Nq1/Rb2RpP1/r2pPkBB/5Pp1/1Q3P2/1rp5/7b

#2

11 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Rxf6#
    • 1...Qf8
      • 2.Rxf6#
    • 1...Qxg6
      • 2.Bxg4#
    • 1...Qh7
      • 2.Rxf6#
    • 1...Qg8
      • 2.Rxf6#
    • 1...Sxe6
      • 2.Qd3#
    • 1...d4
      • 2.Sd6#
    • 1...fxe5
      • 2.Bxg4#
  • Tries
    • 1.Sh6+?
      • 1...Qxh6
        • 2.Rxf6#
      • 1...Kxe6!
  • Keys
    • 1.exf6!
      • threat
        • 2.Re5#
      • 1...Kxe6
        • 2.Bxg4#
      • 1...Qxf6
        • 2.Rxf6#
      • 1...Sxe6
        • 2.Qd3#
      • 1...Bd4
        • 2.fxg4#
      • 1...d4
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(k);N_GUARD::R1(H),XP(i)
    • Q(k);SBLOCK,XP(I)::B(F),XP(d)
    • S(j);P_PINS(K),SBLOCK,XR(H)::QAB(A)
    • P(f);P_PINP(B)::S(K)
    • P(i);XP(D)::B(F),XP(d)
  • Tries
    • Try
      • S(K);CHECK
      • Vars
        • Q(k);XS(K)::R1(H),XP(i)
      • Refutation
        • K(g);P_SPINB(h),P_SPINP(f),S_FLIGHT,XR(H)
  • Actual
    • P(D);XP(i)
    • Threat
      • R1(H)
    • Vars
      • K(g);P_SPINB(h),P_SPINP(f),S_FLIGHT,XR(H)::B(F),XP(d)
      • Q(k);OGATE,XP(D)::R1(H),XQ(k)
      • S(j);P_PINS(K),SBLOCK,XR(H)::QAB(A)
      • B(h);P_PINQ(A)::P(B),XP(d)
      • P(f);P_PINP(B)::S(K)
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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).