MESON Chess Problem Database

Problem Display
PID: 121703 (5R2/3b4/2r5/3rpp2/2pqk1N1/4N1Pp/2P1R2P/B4QK1 w - - 0 1)

Stocchi, Ottavio

Jaarboek, 1948

5R2/3b4/2r5/3rpp2/2pqk1N1/4N1Pp/2P1R2P/B4QK1

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa1
      • 2.Sxf5#
    • 1...Qb2
      • 2.Sxf5#
    • 1...Qxe3+
      • 2.Rxe3#
    • 1...Qd1
      • 2.Sxd1#
    • 1...Rc5
      • 2.Sf6#
    • 1...Re6
      • 2.Qxf5#
    • 1...Rf6
      • 2.Sxf6#
    • 1...Rc7
      • 2.Sf6#
    • 1...Rc8
      • 2.Sf6#
    • 1...Be6
      • 2.Sf6#
    • 1...Be8
      • 2.Qxf5#
  • Keys
    • 1.Re8!
      • threat
        • 2.Qf4#
      • 1...Qxe3+
        • 2.Rxe3#
      • 1...Qxa1
        • 2.Sxf5#
      • 1...Bxe8
        • 2.Qxf5#
      • 1...Qd1
        • 2.Sxd1#
      • 1...Re6
        • 2.Qxf5#
      • 1...Be6
        • 2.Sf6#
      • 1...f4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_PINS(G),P_PINQ(B),XB(A)::R(E)+S(G),XP(g)
    • Q(c);N_PINS(G)::R(E)+S(G),XP(g)
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(G)::R1(E),XQ(c)
    • Q(c);N_PINS(G),P_PINQ(B)::R(E)+S(G),XQ(c)
    • R(h);N_GUARD::S(I)
    • R(h);S_CUTB(i)::QAB1(B),XP(g)
    • R(h);N_GUARD::S(I),XR(h)
    • B(i);S_CUTR(h)::S(I)
    • B(i);N_GUARD::QAB1(B),XP(g)
  • Actual
    • R(J);P_PINP(f)
    • Threat
      • QAR1(B)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(G)::R1(E),XQ(c)
      • Q(c);N_PINS(G),P_PINQ(B),XB(A)::R(E)+S(G),XP(g)
      • B(i);N_GUARD,N_SPINP(f),XR(J)::QAB1(B),XP(g)
      • Q(c);N_PINS(G),P_PINQ(B)::R(E)+S(G),XQ(c)
      • R(h);N_SPINP(f),S_CUTB(i)::QAB1(B),XP(g)
      • B(i);N_SPINP(f),S_CUTR(h)::S(I)
      • P(g);::QAR1(B),XP(g)
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).