MESON Chess Problem Database

Problem Display
PID: 138511 (2K5/2RN3p/1Bp4r/1P1pp2B/QPkn2nR/7q/1PP2p1p/4bN2 w - - 0 1)

Ellerman, Arnoldo

2nd HM., Goteborg Chess Club, 1921

2K5/2RN3p/1Bp4r/1P1pp2B/QPkn2nR/7q/1PP2p1p/4bN2

#2

12 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bxb4
      • 2.Sd2#
    • 1...Sxc2
      • 2.Sxe5#
    • 1...Se2
      • 2.Sxe5#
    • 1...Sb3
      • 2.Sxe5#
    • 1...Sf3
      • 2.Se3#
    • 1...Sxb5
      • 2.Sxe5#
    • 1...Sf5
      • 2.Sxe5#
    • 1...Se6
      • 2.Sxe5#
    • 1...Se3
      • 2.Be2#
    • 1...Sf6
      • 2.Rxc6#
    • 1...c5
      • 2.Rxc5#
  • Tries
    • 1.Se3+?
      • 1...Sxe3
        • 2.Be2#
      • 1...Qxe3!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Sb6#
      • 1...Bxb4
        • 2.Sd2#
      • 1...Sxc2
        • 2.Sxe5#
      • 1...Sxb5
        • 2.Sxe5#
      • 1...Se2
        • 2.Sxe5#
      • 1...Sb3
        • 2.Sxe5#
      • 1...Sf3
        • 2.Se3#
      • 1...Sf5
        • 2.Sxe5#
      • 1...Se6
        • 2.Sxe5#
      • 1...Se3
        • 2.Be2#
      • 1...Sf6
        • 2.Rxc6#
      • 1...c5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(A),XB(a)
    • B(a);N_GUARD,P_SPINB(a),XP(E)::S(A)
    • S(f);P_SPINS(g),XP(C)::S(K),XP(i)
    • S(f);P_SPINS(g)::S(K),XP(i)
    • S(f);P_SPINS(g),S_CUTQ(d)::S(A)
    • S(f);P_SPINS(g),XP(G)::S(K),XP(i)
    • S(g);OGATE,P_PINS(K),P_SPINS(f)::B(H)
    • S(g);P_PINS(K),P_SPINS(f),S_CUTR(k)::R(J),XP(j)
    • P(j);OGATE::R1(J),XP(j)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • S(g);OGATE,P_PINS(K),P_SPINS(f),XS(A)::B(H)
      • Refutation
        • Q(d);XS(A)
  • Actual
    • B(I);
    • Threat
      • S(K)
    • Vars
      • B(a);N_GUARD,P_SPINB(a),XP(E)::S(A)
      • S(f);P_SPINS(g),XP(C)::S(K),XP(i)
      • S(f);P_SPINS(g),XP(G)::S(K),XP(i)
      • S(f);P_SPINS(g)::S(K),XP(i)
      • S(f);P_SPINS(g),S_CUTQ(d)::S(A)
      • S(g);OGATE,P_PINS(K),P_SPINS(f)::B(H)
      • S(g);P_PINS(K),P_SPINS(f),S_CUTR(k)::R(J),XP(j)
      • P(j);OGATE::R1(J),XP(j)
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).