MESON Chess Problem Database

Problem Display
PID: 93042 (1N1R4/P1P2Q2/7r/Ppk5/1n1n2Rb/1B2p3/5NK1/1b6 w - - 0 1)

Eriksson, Finn Olof

Tidskrift for Schack, 1936

1N1R4/P1P2Q2/7r/Ppk5/1n1n2Rb/1B2p3/5NK1/1b6

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Se4#
    • 1...Be4+
      • 2.Sxe4#
    • 1...Sbc2
      • 2.Sd3#
    • 1...Sbc6
      • 2.Sa6#
    • 1...Sdc2
      • 2.Se4#
  • Tries
    • 1.Qe7+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Bxe7!
    • 1.Qf8+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Be7!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qxd4#
      • 1...Be4+
        • 2.Sxe4#
      • 1...Sxb3
        • 2.Qxb4#
      • 1...Sbc2
        • 2.Sd3#
      • 1...Sbc6
        • 2.Sa6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Bf6
        • 2.Qd6#
      • 1...Sdc2
        • 2.Se4#
      • 1...Se2
        • 2.Qxb4#
      • 1...Sf3
        • 2.Qxb4#
      • 1...Sf5
        • 2.Qxb4#
      • 1...Sdc6
        • 2.Sd7#
      • 1...Se6
        • 2.Qd6#
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(A)
    • B(a);CHECK,N_GUARD::S(A),XB(a)
    • S(c);N_GUARD,S_CUTB(a)::S(A)
    • S(c);N_GUARD,SBLOCK,S_CUTR(h)::S(I)
    • S(d);S_CUTB(a)::S(A)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB1(H),XR(h)
      • Refutation
        • B(e);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB1(H),XR(h)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H),XS(d)
    • Vars
      • B(a);CHECK,N_GUARD::S(A),XB(a)
      • S(d);OGATE,XB(C)::QAB1(H),XS(c)
      • S(c);N_GUARD,S_CUTB(a)::S(A)
      • S(c);N_GUARD,SBLOCK,S_CUTR(h)::S(I)
      • R(h);N_GUARD::QAB1(H),XR(h)
      • B(e);S_CUTR(h)::QAB1(H)
      • S(d);S_CUTB(a)::S(A)
      • S(d);OGATE::QAB1(H),XS(c)
      • S(d);SBLOCK::S(I)
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).