MESON Chess Problem Database

Problem Display
PID: 253016 (8/1ppN1nB1/7R/1BPkb1Q1/5p2/2n2P2/2PrN1bK/8 w - - 0 1)

Baturin, Aleksandr Adrianovich

Die Schwalbe, 1930

8/1ppN1nB1/7R/1BPkb1Q1/5p2/2n2P2/2PrN1bK/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxc3#
    • 1...Sb1
      • 2.c4#
    • 1...Sd1
      • 2.c4#
    • 1...Sa2
      • 2.c4#
    • 1...Sa4
      • 2.c4#
    • 1...Se4
      • 2.c4#
    • 1...Sd6
      • 2.Qxe5#
    • 1...Sxh6
      • 2.Qxe5#
    • 1...Sd8
      • 2.Qxe5#
    • 1...Sh8
      • 2.Qxe5#
  • Tries
    • 1.Rd6+?
      • 1...Sxd6
        • 2.Qxe5#
      • 1...cxd6!
  • Keys
    • 1.Qxf4!
      • threat
        • 2.Bc4#
      • 1...Bxf4+
        • 2.Sxf4#
      • 1...Sxb5
        • 2.c4#
      • 1...Sxh6
        • 2.Qxe5#
      • 1...Bf6
        • 2.Qc4#
      • 1...Rd4
        • 2.Sxc3#
      • 1...Bd4
        • 2.Qxf7#
      • 1...Bd6
        • 2.Sxc3#
      • 1...Se4
        • 2.c4#
      • 1...Sd6
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • R(a);SBLOCK::S(B),XS(c)
    • S(c);OGATE::P(A)
    • S(i);N_GUARD::QAR1(G),XB(f)
    • S(i);N_GUARD,XR(H)::QAR1(G),XB(f)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • S(i);XR(H)::QAR1(G),XB(f)
      • Refutation
        • P(h);XR(H)
  • Actual
    • Q(G);N_PINB(f),P_SPINQ(G),XP(d)
    • Threat
      • B(E)
    • Vars
      • B(f);CHECK,XQ(G)::S(B),XB(f)
      • S(c);OGATE,XB(E)::P(A)
      • S(i);N_GUARD,XR(H)::QAR1(G),XB(f)
      • B(f);N_PINQ(G)::QAB1(G)
      • R(a);S_CUTB(f)::S(B),XS(c)
      • B(f);N_PINQ(G)::QAB(G),XS(i)
      • B(f);N_GUARD::S(B),XS(c)
      • S(c);OGATE::P(A)
      • S(i);N_GUARD::QAR1(G),XB(f)
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).