MESON Chess Problem Database

Problem Display
PID: 198688 (2BN1n2/3P1R2/1Kp2rp1/2Q1pkP1/6n1/3P2pP/5bP1/2B2R2 w - - 0 1)

Carra, Arturo

5th HM., Centurini Ty. (L'Italia Scacchistica), 1921

2BN1n2/3P1R2/1Kp2rp1/2Q1pkP1/6n1/3P2pP/5bP1/2B2R2

#2

12 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sh2
      • 2.Rxf6#
    • 1...Sh6
      • 2.Rxf6#
    • 1...Sxd7+
      • 2.Bxd7#
  • Tries
    • 1.Rxf2+?
      • 1...Sxf2
        • 2.Rxf6#
      • 1...gxf2!
    • 1.Qxf2+?
      • 1...Sxf2
        • 2.Rxf6#
      • 1...gxf2!
  • Keys
    • 1.Sxc6!
      • 1...Sxd7+
        • 2.Bxd7#
      • 1...Ke6
        • 2.d8S#
      • 1...Rxf7
        • 2.Sd4#
      • 1...Se3
        • 2.Qxe5#
      • 1...Sh2
        • 2.Rxf6#
      • 1...Sh6
        • 2.Rxf6#
      • 1...Se6
        • 2.Se7#
      • 1...Sh7
        • 2.d8Q#
        • 2.d8S#
        • 2.d8B#
        • 2.d8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::R1(J),XR(g)
    • S(i);CHECK,OGATE,P_SPINS(i),XP(I)::B(K),XS(i)
  • Tries
    • Try
      • R(B);CHECK,N_SPINQ(F),XB(a)
      • Vars
        • S(c);XR(B)::R1(J),XR(g)
      • Refutation
        • P(b);XR(B)
    • Try
      • Q(F);CHECK,N_PINP(d),N_SPINQ(F),XB(a)
      • Vars
        • S(c);P_SPINS(c),XQ(F)::R1(J),XR(g)
      • Refutation
        • P(b);P_SPINP(b),XQ(F)
  • Actual
    • S(L);P_SPINS(L),XP(f)
    • Vars
      • S(i);CHECK,OGATE,P_SPINS(i),XP(I)::B(K),XS(i)
      • K(e);N_PINS(L),N_SPINB(a),N_SPINP(d),N_SPINR(g),S_FLIGHT::P=S
      • R(g);N_PINS(L),N_SPINR(g),XR(J)::S(L)
      • S(c);N_PINQ(F)::QAR1(F),XP(d)
      • S(c);N_GUARD::R1(J),XR(g)
      • S(i);N_PINS(L),SBLOCK::S(L)
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).