MESON Chess Problem Database

Problem Display
PID: 204476 (4R3/5r2/1qP1pP2/R1rbk1pN/3N1pP1/4Pp1K/p1B4Q/B7 w - - 0 1)

ten Cate, Pieter

Karlovac Chess Club, 1925

4R3/5r2/1qP1pP2/R1rbk1pN/3N1pP1/4Pp1K/p1B4Q/B7

#2

12 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Rxe6#
    • 1...Rc3
      • 2.Rxe6#
    • 1...Rc4
      • 2.Rxe6#
  • Tries
    • 1.exf4+?
      • 1...gxf4
        • 2.Qxf4#
      • 1...Kd6!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Sh5#
      • 1...Kd6
        • 2.Sfxe6#
      • 1...Kxf6
        • 2.Sh5#
      • 1...Rxc2
        • 2.Rxe6#
      • 1...Rxf6
        • 2.Sg6#
      • 1...Bxc6
        • 2.Rxe6#
      • 1...gxf4
        • 2.Qxf4#
      • 1...Bb3
        • 2.Sf5#
      • 1...Bc4
        • 2.Sb5#
      • 1...Be4
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • R(d);P_SPINB(e),XB(B)::R1(L),XP(i)
    • R(d);P_SPINB(e)::R1(L),XP(i)
  • Tries
    • Try
      • P(D);CHECK,P_PINP(i),XP(c)
      • Vars
        • P(g);N_SPINP(i),OGATE,P_SPINP(g),XP(D)::QAB1(C),XP(g)
      • Refutation
        • K(f);N_SPINP(i),S_FLIGHT
  • Actual
    • S(I);P_PINP(i),XP(c)
    • Threat
      • QAB(C)+S(I)
    • Vars
      • K(f);N_SPINP(i),S_FLIGHT::QAB(C)+S(I),XP(i)
      • K(f);N_SPINP(i),S_FLIGHT,XP(K)::S(I)
      • R(d);P_SPINB(e),XB(B)::R1(L),XP(i)
      • R(j);SBLOCK,XP(K)::QAB(C)+S(I),DCHECK
      • B(e);N_GUARD,P_SPINR(d),XP(J)::R1(L),XP(i)
      • P(g);N_SPINP(i),OGATE,P_SPINP(g),XS(I)::QAB1(C),XP(g)
      • B(e);P_SPINR(d),S_CUTQ(h)::B(A)+S(F)
      • B(e);P_SPINR(d)::B(A)+S(F)
      • B(e);N_GUARD,P_SPINR(d)::R1(L),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).