MESON Chess Problem Database

Problem Display
PID: 91943 (7b/6B1/3N1r2/R2PpPp1/1p1kN1R1/1Bnp1Pp1/3P1n2/KQ6 w - - 0 1)

Labai, Zoltan

1st HM., Shapovalov-65 JT, 2006

7b/6B1/3N1r2/R2PpPp1/1p1kN1R1/1Bnp1Pp1/3P1n2/KQ6

#2

12 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.Sxf5#
    • 1...Sfxe4
      • 2.Qg1#
    • 1...Sxb1
      • 2.Sb5#
    • 1...Sd1
      • 2.Sb5#
    • 1...Sa2
      • 2.Sb5#
    • 1...Se2
      • 2.Sb5#
    • 1...Sa4
      • 2.Sb5#
    • 1...Scxe4
      • 2.Qb2#
    • 1...Sb5
      • 2.Sxb5#
    • 1...Sxd5
      • 2.Sb5#
      • 2.Rxd5#
  • Tries
    • 1.Sxf2+?
      • 1...Se4
        • 2.Rxe4#
        • 2.Qxd3#
        • 2.Qb2#
      • 1...e4!
    • 1.Sc5+?
      • 1...Sfe4
        • 2.Qxd3#
        • 2.Qg1#
      • 1...Sxg4
        • 2.Qxd3#
      • 1...Sce4
        • 2.Qb2#
      • 1...e4!
    • 1.Ra4?
      • threat
        • 2.Rxb4#
      • 1...Sfxe4
        • 2.Qg1#
      • 1...Sxa4
        • 2.Sb5#
      • 1...Sxd5
        • 2.Sb5#
      • 1...Sa2
        • 2.Sb5#
      • 1...Scxe4!
    • 1.Rb5?
      • threat
        • 2.Rxb4#
      • 1...Sfxe4
        • 2.Qg1#
      • 1...Scxe4
        • 2.Qb2#
      • 1...Sxb5
        • 2.Sxb5#
      • 1...Sxd5
        • 2.Rxd5#
      • 1...Sa2!
    • 1.Qg1?
      • 1...Rxf5
        • 2.Sxf5#
      • 1...Rxd6
        • 2.Sxc3#
      • 1...Sxe4
        • 2.Rxe4#
      • 1...Sxd5
        • 2.Sb5#
        • 2.Rxd5#
      • 1...Re6
        • 2.Sxc3#
      • 1...Rg6
        • 2.Sxc3#
      • 1...Rh6
        • 2.Sxc3#
      • 1...Rf7
        • 2.Sxc3#
      • 1...Rf8
        • 2.Sxc3#
      • 1...Sb1
        • 2.Sb5#
      • 1...Sd1
        • 2.Sb5#
      • 1...Sa2
        • 2.Sb5#
      • 1...Se2
        • 2.Sb5#
      • 1...Sa4
        • 2.Sb5#
      • 1...Sb5
        • 2.Sxb5#
      • 1...g2
        • 2.Qxf2#
      • 1...Bxg7!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Sb5#
      • 1...Rxd6
        • 2.Sxf2#
      • 1...Sxe4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(i);P_SPINP(g),XP(J)::S(K),XR(i)
    • S(a);OGATEB,P_SPINS(a),XS(F)::QAB(B)
    • S(b);N_GUARD,XQ(B)::S(K)
    • S(b);N_GUARD::S(K)
    • S(b);OGATEB,P_SPINS(b),XS(F)::QAB(B)
    • S(b);N_GUARD::S(K),XS(b)
  • Tries
    • Try
      • S(F);CHECK,XS(a)
      • Refutation
        • P(g);P_SPINP(g),P_SPINR(i)
    • Try
      • S(F);CHECK
      • Vars
        • S(a);XR(G)::QAR1(B),XP(c)
        • S(b);P_SPINS(b),S_CUTP(g),S_CUTS(a),S_CUTS(a)::QAB(B)
      • Refutation
        • P(g);P_SPINP(g),P_SPINR(i)
    • Try
      • R(H);P_PINP(e)
      • Threat
        • R(H),XP(e)
      • Vars
        • S(a);OGATEB,P_SPINS(a),XS(F)::QAB(B)
        • S(b);N_GUARD,N_SPINP(e),XR(H)::S(K)
        • S(b);N_GUARD,XP(I)::S(K)
        • S(b);N_GUARD::S(K)
      • Refutation
        • S(b);P_SPINS(b),XS(F)
    • Try
      • R(H);
      • Threat
        • R(H),XP(e)
      • Vars
        • S(a);OGATEB,P_SPINS(a),XS(F)::QAB(B)
        • S(b);OGATEB,P_SPINS(b),XS(F)::QAB(B)
        • S(b);XR(H)::S(K),XS(b)
        • S(b);OGATE,XP(I)::R1(H),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(B);P_PINS(a)
      • Vars
        • R(i);P_SPINP(g),XP(J)::S(K),XR(i)
        • R(i);P_SPINP(g),XS(K)::R(G)+S(F),XS(b)
        • S(b);OGATE,XS(F)::R1(G),XS(b)
        • R(i);P_SPINP(g)::R(G)+S(F),XS(b)
        • S(b);N_GUARD::S(K)
        • S(b);N_GUARD::S(K),XS(b)
        • P(d);N_GUARD::QAB(B),XS(a)
      • Refutation
        • B(j);XB(L)
  • Actual
    • Q(B);P_PINS(b)
    • Threat
      • S(K)
    • Vars
      • R(i);P_SPINP(g),XS(K)::R(G)+S(F),XS(a)
      • S(a);OGATE,XS(F)::R1(G),XS(a)
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).