MESON Chess Problem Database

Problem Display
PID: 264168 (4N3/q1p1RpKn/p4p2/1B1kB3/NR1P3b/2p5/3PQ3/1n5b w - - 0 1)

May, Willy Paul

Tijdschrift vd KNSB, 1950

4N3/q1p1RpKn/p4p2/1B1kB3/NR1P3b/2p5/3PQ3/1n5b

#2

10 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Sxc7#
      • 2.Rxd4#
    • 1...Qa8
      • 2.Sxc7#
    • 1...Bg2
      • 2.Qxg2#
    • 1...Bf3
      • 2.Qxf3#
    • 1...Be4
      • 2.Qc4#
    • 1...Sxd2
      • 2.Sxc3#
    • 1...Sa3
      • 2.Sxc3#
    • 1...Sg5
      • 2.Sxf6#
    • 1...fxe5
      • 2.Rxe5#
      • 2.Qxe5#
    • 1...c6
      • 2.Bc4#
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qxh1#
      • 1...Ke4
        • 2.Bc6#
      • 1...Qxd4
        • 2.Rxd4#
      • 1...Sxd2
        • 2.Sxc3#
      • 1...fxe5
        • 2.Rxe5#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Be4
        • 2.Qc4#
      • 1...Sg5
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD::S(J),XP(i)
    • B(b);N_GUARD::QAB(B),XB(b)
    • B(b);SBLOCK::QAB1(B)
    • S(a);N_GUARD,XP(A)::S(C),XP(c)
    • S(a);N_GUARD::S(C),XP(c)
    • S(k);N_GUARD,S_CUTB(d)::S(J),XP(g)
    • P(i);SBLOCK::B(F)
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XB(b)
    • Vars
      • K(e);N_GUARD,S_FLIGHT::B(F)
      • Q(h);OGATE,XP(E)::R1(D),XQ(h)
      • S(a);N_GUARD,XP(A)::S(C),XP(c)
      • P(g);OGATE,XB(G)::R1(H),XP(g)
      • B(b);N_GUARD::QAB(B),XB(b)
      • B(b);SBLOCK::QAB1(B)
      • S(k);N_GUARD,S_CUTB(d)::S(J),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).