MESON Chess Problem Database

Problem Display
PID: 227381 (7Q/B1pp1B2/3pr1n1/3k4/Kp1N1P2/1Pb2pN1/3nP3/3R4 w - - 0 1)

af Hallstrom, Edvard Johannes Gabriel

Tidskrift for Schack, 1910

7Q/B1pp1B2/3pr1n1/3k4/Kp1N1P2/1Pb2pN1/3nP3/3R4

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.e4#
    • 1...Sf1
      • 2.e4#
    • 1...Sc4
      • 2.e4#
    • 1...Sf8
      • 2.Qh5#
  • Tries
    • 1.Rxd2?
      • threat
        • 2.e4#
      • 1...fxe2
        • 2.Qh1#
      • 1...Bxd4!
  • Keys
    • 1.Sc6!
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxh8
        • 2.Sxb4#
      • 1...Sxf4
        • 2.Se7#
      • 1...Sxh8
        • 2.Se7#
      • 1...fxe2
        • 2.Qh1#
      • 1...dxc6
        • 2.e4#
      • 1...Ba1
        • 2.Sxb4#
      • 1...Bb2
        • 2.Sxb4#
      • 1...Bd4
        • 2.Sxb4#
      • 1...Be5
        • 2.Sxb4#
      • 1...Bf6
        • 2.Sxb4#
      • 1...Bg7
        • 2.Sxb4#
      • 1...Sh4
        • 2.Se7#
      • 1...Se5
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...Sf8
        • 2.Se7#
      • 1...f2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 16
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::P(B)
    • S(h);N_GUARD::QAR(J)
  • Tries
    • Try
      • R(A);XS(a)
      • Threat
        • P(B)
      • Vars
        • P(c);OGATEB,XP(B)::QAB(J)
      • Refutation
        • B(b);P_SPINB(b),XS(F)
  • Actual
    • S(F);P_PINS(a)
    • Vars
      • K(e);N_SPINR(g),N_SPINS(a),OGATEB,S_FLIGHT,XS(F)::QAB(J)
      • B(b);N_GUARD,XQ(J)::S(F),XP(d)
      • S(h);N_GUARD,XP(G)::S(F)
      • S(h);N_GUARD,XQ(J)::S(F)
      • P(c);OGATEB,XP(B)::QAB(J)
      • P(j);SBLOCK,XS(F)::P(B)
      • B(b);N_GUARD::S(F),XP(d)
      • B(b);N_GUARD,N_SPINS(a)::S(F),XP(d)
      • S(h);N_GUARD::S(F)
      • S(h);N_GUARD::S(F),XS(h)
      • P(c);OGATEB::QAB(J)
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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).