MESON Chess Problem Database

Problem Display
PID: 44087 (8/2K2N2/3P1B2/p2p1p1b/3Pkq2/r1P2p2/2pQP1B1/1Nr1n3 w - - 0 1)

Nield, Joshua

Het Schaakleven, 1931

8/2K2N2/3P1B2/p2p1p1b/3Pkq2/r1P2p2/2pQP1B1/1Nr1n3

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Sg5#
    • 1...Qe5
      • 2.Sg5#
    • 1...Qg5
      • 2.Sxg5#
    • 1...Qxd6+
      • 2.Sxd6#
    • 1...Rxc3+
      • 2.Sxc3#
    • 1...Sxg2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
      • 2.exd3#
  • Tries
    • 1.Bxf3+?
      • 1...Qxf3
        • 2.Sg5#
      • 1...Sxf3
        • 2.Qd3#
      • 1...Bxf3!
  • Keys
    • 1.Bg5!
      • threat
        • 2.Qxf4#
      • 1...Qxd6+
        • 2.Sxd6#
      • 1...Rxc3+
        • 2.Sxc3#
      • 1...Qxd2
        • 2.Sxd2#
      • 1...Qxg5
        • 2.Sxg5#
      • 1...Sxg2
        • 2.Qd3#
      • 1...Qh2
        • 2.Qe3#
      • 1...Qe3
        • 2.Qxe3#
      • 1...Qg3
        • 2.Qe3#
      • 1...Qe5
        • 2.Qe3#
      • 1...Qg4
        • 2.Qe3#
      • 1...Qh4
        • 2.Qe3#
      • 1...Sd3
        • 2.Qxd3#
        • 2.exd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD::S(J)
    • Q(g);N_GUARD,N_PINP(G)::S(J),XQ(g)
    • Q(g);CHECK,XP(G)::S(J),XQ(g)
    • R(d);CHECK,XP(E)::S(A),XR(d)
    • S(b);N_GUARD,N_SPINP(e),XB(D)::QAB1(B)
  • Tries
    • Try
      • B(D);CHECK,XP(e)
      • Vars
        • Q(g);N_PINP(G),XB(D)::S(J)
        • S(b);XB(D)::QAB1(B)
      • Refutation
        • B(k);XB(D)
  • Actual
    • B(H);
    • Threat
      • QAR1(B),XQ(g)
    • Vars
      • Q(g);CHECK,XP(G)::S(J),XQ(g)
      • R(d);CHECK,XP(E)::S(A),XR(d)
      • Q(g);N_PINP(G),XQ(B)::S(A),XQ(g)
      • Q(g);N_PINP(G),XB(H)::S(J),XQ(g)
      • S(b);N_GUARD,N_SPINP(e),XB(D)::QAB1(B)
      • Q(g);N_GUARD::QAR1(B)
      • Q(g);N_GUARD,N_PINP(G)::QAR1(B),XQ(g)
      • Q(g);N_GUARD,N_PINP(G)::QAR1(B)
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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).