MESON Chess Problem Database

Problem Display
PID: 107610 (b2NK3/2pQ4/1p2pp2/R2n4/1P1k1P2/1P1p1RN1/1P2qr2/5B2 w - - 0 1)

Authier, Gabriel

Bulletin de l'UPF, 1948

b2NK3/2pQ4/1p2pp2/R2n4/1P1k1P2/1P1p1RN1/1P2qr2/5B2

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sxe6#
    • 1...Qxf1
      • 2.Sxe6#
    • 1...Qe1
      • 2.Rxd3#
    • 1...Qxb2
      • 2.Rxd3#
    • 1...Qc2
      • 2.Sxe6#
    • 1...Qd2
      • 2.Sxe6#
    • 1...Qe5
      • 2.Rxd3#
    • 1...Bc6
      • 2.Sxc6#
    • 1...e5
      • 2.Se6#
  • Tries
    • 1.Rxd5+?
      • 1...Bxd5
        • 2.Sc6#
      • 1...exd5+!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Sf5#
      • 1...Qxe6+
        • 2.Sxe6#
      • 1...Bc6+
        • 2.Sxc6#
      • 1...Qxb2
        • 2.Rxd3#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qe5
        • 2.Rxd3#
      • 1...Se3
        • 2.Qxf6#
      • 1...Se7
        • 2.Qc4#
      • 1...f5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::S(J),XP(g)
    • Q(a);N_GUARD,XB(A)::S(J),XP(g)
    • Q(a);N_GUARD::R1(D),XP(c)
    • Q(a);N_GUARD,XP(B)::R1(D),XP(c)
    • B(j);N_GUARD,P_PINQ(I)::S(J),XB(j)
    • P(g);S_CUTQ(a)::S(J)
  • Tries
    • Try
      • R(H);CHECK,XS(e)
      • Vars
        • B(j);P_SPINB(j),XR(H)::S(J)
      • Refutation
        • P(g);CHECK,P_SPINP(g),XR(H)
  • Actual
    • Q(I);N_PINS(e),P_SPINQ(I),XP(g)
    • Threat
      • S(E)
    • Vars
      • Q(a);CHECK,XQ(I)::S(J),XQ(a)
      • B(j);CHECK,N_GUARD::S(J),XB(j)
      • Q(a);N_GUARD,N_PINQ(I),XP(B)::R1(D),XP(c)
      • Q(a);N_GUARD::QAR1(I),XQ(a)
      • Q(a);N_GUARD::R1(D),XP(c)
      • S(e);N_PINQ(I)::QAB(I),XP(h)
      • S(e);N_PINQ(I)::QAR1(I)
      • P(h);::S(E),XP(h)
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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).