MESON Chess Problem Database

Problem Display
PID: 219894 (7q/1B3p1N/4p2b/3pP1P1/1R1Pk3/Qp1pPR2/6KB/1b6 w - - 0 1)

Nemmer, Max F

Land og Folk, 0000

7q/1B3p1N/4p2b/3pP1P1/1R1Pk3/Qp1pPR2/6KB/1b6

#2

11 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.dxe5#
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qa8
      • 2.Sf6#
    • 1...Qb8
      • 2.Sf6#
    • 1...Qc8
      • 2.Sf6#
    • 1...Qe8
      • 2.Sf6#
    • 1...Qf8
      • 2.Sf6#
    • 1...Qg8
      • 2.Sf6#
    • 1...Bxg5
      • 2.Sxg5#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Rf4#
      • 1...Qxe5
        • 2.dxe5#
      • 1...Bxg5
        • 2.Sxg5#
      • 1...Qf6
        • 2.Sxf6#
      • 1...d2!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Rf4#
      • 1...Qxe5
        • 2.dxe5#
      • 1...Bxg5
        • 2.Sxg5#
      • 1...d2
        • 2.Qxb1#
      • 1...Qf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(i);OGATE,XP(H)::R(F)+P(G),XQ(i)
    • Q(i);N_GUARD::S(K),XQ(i)
    • Q(i);N_GUARD::S(K)
    • Q(i);N_GUARD,P_PINP(I)::S(K)
    • B(g);XP(I)::S(K),XB(g)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • R1(E)
      • Vars
        • Q(i);OGATE,XP(H)::R(F)+P(G),XQ(i)
        • B(g);XP(I)::S(K),XB(g)
        • Q(i);N_GUARD,P_PINR(E)::S(K),XQ(i)
      • Refutation
        • P(c);
  • Actual
    • Q(C);
    • Threat
      • R1(E)
    • Vars
      • Q(i);OGATE,XP(H)::R(F)+P(G),XQ(i)
      • B(g);XP(I)::S(K),XB(g)
      • P(c);OGATEB::QAB(C),XB(a)
      • Q(i);N_GUARD::S(K),XQ(i)
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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).