MESON Chess Problem Database

Problem Display
PID: 245071 (B7/5p2/r1nQ1p1K/qp1P2p1/R1N1k1P1/1N1b1p2/8/2B3b1 w - - 0 1)

Ekstrom, Sven Johan Adrian

Schackvarlden, 1940

B7/5p2/r1nQ1p1K/qp1P2p1/R1N1k1P1/1N1b1p2/8/2B3b1

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.Scd2#
    • 1...Sd4
      • 2.Sc5#
  • Tries
    • 1.Qe5+?
      • 1...Sxe5
        • 2.Sd6#
      • 1...fxe5!
    • 1.Qe6+?
      • 1...Se5
        • 2.Sd6#
        • 2.Qf5#
      • 1...fxe6!
    • 1.Qd7?
      • threat
        • 2.Qf5#
      • 1...Sd4
        • 2.Sc5#
      • 1...f5
        • 2.Qxf5#
      • 1...Se7!
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Qf5#
      • 1...Kxd5
        • 2.Qe5#
      • 1...Sb4
        • 2.Sbd2#
      • 1...Sd4
        • 2.Sc5#
      • 1...Se5
        • 2.Sd6#
      • 1...Sa7
        • 2.Sd6#
      • 1...Se7
        • 2.Sd6#
      • 1...Sb8
        • 2.Sd6#
      • 1...Sd8
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::R(C)+S(D),DCHECK
    • S(i);SBLOCK,S_CUTB(a)::S(B)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • S(i);SBLOCK,XQ(G)::R(C)+S(D),DCHECK
      • Refutation
        • P(j);XQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • P(k);XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • S(i);SBLOCK,S_CUTB(a)::S(B)
        • P(j);::QAB1(G),XP(j)
      • Refutation
        • S(i);
  • Actual
    • Q(G);XP(j)
    • Threat
      • QAB1(G)
    • Vars
      • K(d);P_SPINS(i),S_FLIGHT,XP(F)::QAR1(G)
      • S(i);P_PINQ(G),S_CUTQ(e)::S(B)
      • S(i);P_PINQ(G),S_CUTB(a)::S(B)
      • S(i);P_PINQ(G)::R(C)+S(D),DCHECK
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).