MESON Chess Problem Database

Problem Display
PID: 245748 (4brq1/6B1/3Q1np1/1pppn3/3k1b1r/2NPpp2/BPK2p2/3R4 w - - 0 1)

Wrobel, Marian

Norsk Sjakkblad, 1928

4brq1/6B1/3Q1np1/1pppn3/3k1b1r/2NPpp2/BPK2p2/3R4

#2

8 + 15

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Sxb5#
    • 1...Sxd3
      • 2.Rxd3#
    • 1...Sc4
      • 2.dxc4#
    • 1...Seg4
      • 2.Qxf4#
    • 1...Sc6
      • 2.Sxb5#
    • 1...Sed7
      • 2.Sxb5#
    • 1...Sf7
      • 2.Qxd5#
    • 1...Se4
      • 2.dxe4#
    • 1...Sfd7
      • 2.Sxb5#
    • 1...c4
      • 2.Qb6#
  • Keys
    • 1.b4!
      • threat
        • 2.Qxc5#
      • 1...Sxd3
        • 2.Rxd3#
      • 1...cxb4
        • 2.Qb6#
      • 1...Sc4
        • 2.dxc4#
      • 1...Seg4
        • 2.Qxf4#
      • 1...Sc6
        • 2.Sxb5#
      • 1...Sed7
        • 2.Sxb5#
      • 1...Sf7
        • 2.Qxd5#
      • 1...Se4
        • 2.dxe4#
      • 1...Sfd7
        • 2.Sxb5#
      • 1...c4
        • 2.Qc5#
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(m);N_GUARD::S(E),XP(g)
    • S(j);OGATE,P_SPINS(j),XP(F)::R1(A),XS(j)
    • S(j);OGATE,P_SPINS(k)::R(A)+P(F),XS(j)
    • S(j);OGATE,P_SPINS(k)::QAR2(G),XB(e)
    • S(j);P_SPINS(k),S_CUTB(m)::S(E),XP(g)
    • S(j);P_SPINS(k),S_CUTQ(o)::QAR1(G),XP(i)
    • S(k);OGATE,P_SPINS(j)::R(A)+P(F),XS(k)
    • S(k);P_SPINS(j),S_CUTB(m)::S(E),XP(g)
    • P(h);OGATEB::QAB(G)
  • Actual
    • P(C);
    • Threat
      • QAB1(G),XP(h)
    • Vars
      • S(j);OGATE,P_SPINS(j),XP(F)::R1(A),XS(j)
      • P(h);OGATEB,XP(C)::QAB(G)
      • S(j);OGATE,P_SPINS(k)::R(A)+P(F),XS(j)
      • S(j);OGATE,P_SPINS(k)::QAR2(G),XB(e)
      • S(j);P_SPINS(k),S_CUTB(m)::S(E),XP(g)
      • S(j);P_SPINS(k),S_CUTQ(o)::QAR1(G),XP(i)
      • S(k);OGATE,P_SPINS(j)::R(A)+P(F),XS(k)
      • S(k);P_SPINS(j),S_CUTB(m)::S(E),XP(g)
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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).