MESON Chess Problem Database

Problem Display
PID: 110455 (1r1n1b1q/1n1R1p1b/pQ5r/4p3/P1k5/BpP1pR2/1P4Bp/7K w - - 0 1)

Siklosi, Pal

Szekszard TST TT, 1963

1r1n1b1q/1n1R1p1b/pQ5r/4p3/P1k5/BpP1pR2/1P4Bp/7K

#2

9 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh3
      • 2.Qxa6#
    • 1...Rh4
      • 2.Qxa6#
    • 1...Rh5
      • 2.Qxa6#
    • 1...Bg6
      • 2.Qxa6#
    • 1...Bb4
      • 2.Qxb4#
    • 1...Bg7
      • 2.Qb4#
    • 1...Sc6
      • 2.Qxa6#
    • 1...Se6
      • 2.Qxa6#
    • 1...a5
      • 2.Qb5#
    • 1...f6
      • 2.Qxa6#
  • Tries
    • 1.Bf1+?
      • 1...Bd3
        • 2.Bxd3#
      • 1...e2!
  • Keys
    • 1.Rxe3!
      • threat
        • 2.Bd5#
      • 1...Rd6
        • 2.Qb4#
      • 1...Be4
        • 2.Rxe4#
      • 1...Bd6
        • 2.Qxa6#
      • 1...Sd6
        • 2.Qc5#
      • 1...e4
        • 2.Bf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • R(g);N_GUARD::QAB(H),XP(f)
    • B(j);S_CUTR(g)::QAB(H),XP(f)
    • B(m);N_GUARD::QAR1(H),XB(m)
    • B(m);N_GUARD::QAR1(H)
    • S(l);S_CUTR(g)::QAB(H),XP(f)
    • P(f);N_GUARD::QAB1(H)
    • P(i);S_CUTR(g)::QAB(H),XP(f)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::B(C),XB(j)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • R(F);XP(c)
    • Threat
      • B(C)
    • Vars
      • R(g);S_CUTB(m)::QAR1(H)
      • B(j);N_GUARD,P_PINB(C)::R(F),XB(j)
      • B(m);S_CUTR(g)::QAB(H),XP(f)
      • S(h);N_GUARD,S_CUTB(m)::QAR1(H)
      • P(e);S_CUTB(j)::B(C)
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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).