MESON Chess Problem Database

Problem Display
PID: 132351 (2b5/3np3/P1k2b2/QpP1PN2/1p6/1rn2N1K/2RR4/6B1 w - - 0 1)

Casa, Alex

4th Place, Match: France - Israel, 1954

2b5/3np3/P1k2b2/QpP1PN2/1p6/1rn2N1K/2RR4/6B1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Sxe7#
    • 1...Bg7
      • 2.Sxe7#
    • 1...Bh8
      • 2.Sxe7#
    • 1...Sd5
      • 2.Sd4#
    • 1...Sxe5
      • 2.Qb6#
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sb8
      • 2.Qb6#
    • 1...Sf8
      • 2.Qb6#
    • 1...e6
      • 2.Rd6#
  • Tries
    • 1.S3d4+?
      • 1...Kxc5
        • 2.Qxb5#
      • 1...Kd5!
    • 1.S5d4+?
      • 1...Kxc5
        • 2.Qxb5#
      • 1...Kd5!
    • 1.exf6?
      • threat
        • 2.Sxe7#
      • 1...Sxc5
        • 2.Se5#
      • 1...Sxf6
        • 2.Se5#
        • 2.Qb6#
      • 1...exf6
        • 2.Se7#
        • 2.Rd6#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sd5
        • 2.Sd4#
      • 1...Se5
        • 2.Sxe5#
        • 2.Qb6#
      • 1...Sb8
        • 2.Se5#
        • 2.Qb6#
      • 1...Sf8
        • 2.Se5#
        • 2.Qb6#
      • 1...e5
        • 2.Se7#
        • 2.Rd6#
      • 1...e6
        • 2.Se7#
        • 2.Rd6#
      • 1...Bxa6!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qxc8#
      • 1...Bxe5
        • 2.Sxe7#
      • 1...Bxa6
        • 2.Qxd7#
      • 1...Sxc5
        • 2.Sd4#
      • 1...Bb7
        • 2.Qxd7#
      • 1...Sd5
        • 2.Sd4#
      • 1...Sb6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(f);N_GUARD,XP(H)::S(I),XP(h)
    • B(f);N_GUARD::S(I),XP(h)
    • S(b);P_PINS(D),SBLOCK::S(I)
    • S(g);N_GUARD,P_PINS(I),XP(H)::QAR1(F)
    • S(g);N_GUARD,P_PINS(I)::QAR1(F),XS(g)
    • S(g);N_GUARD,P_PINS(I)::QAR1(F)
    • P(h);N_GUARD::R1(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d),P_SPINS(b),XP(G)::QAR1(F),XP(d)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d),P_SPINS(b),XP(G)::QAR1(F),XP(d)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • P(H);XB(f)
      • Threat
        • S(I),XP(h)
      • Vars
        • S(g);N_GUARD,P_PINS(I),XP(G)::S(D)
        • S(g);N_GUARD,P_PINS(I)::QAR1(F),XS(g)
        • S(b);P_PINS(D),SBLOCK::S(I)
      • Refutation
        • B(i);XP(J)
  • Actual
    • Q(F);
    • Threat
      • QAR2(F),XB(i)
    • Vars
      • B(f);N_GUARD,XP(H)::S(I),XP(h)
      • B(i);N_GUARD,XP(J)::QAB1(F),XS(g)
      • S(g);P_PINS(I),SBLOCK,XP(G)::S(D)
      • B(i);N_GUARD::QAB1(F),XS(g)
      • S(b);P_PINS(D),SBLOCK::S(I)
      • S(g);N_GUARD,P_PINS(I)::QAR1(F),XS(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).