MESON Chess Problem Database

Problem Display
PID: 55410 (5B2/KR3prN/1P2k1p1/Q6N/8/8/bbn3B1/2q5 w - - 0 1)

Einat, Paz

Navon, Emanuel

Variantim, 2004

5B2/KR3prN/1P2k1p1/Q6N/8/8/bbn3B1/2q5

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Sxf4#
    • 1...Qg5
      • 2.Sxg5#
    • 1...Qa1
      • 2.Sf4#
      • 2.Sg5#
    • 1...Qb1
      • 2.Sf4#
      • 2.Sg5#
    • 1...Qd1
      • 2.Sf4#
      • 2.Sg5#
    • 1...Qe1
      • 2.Sf4#
      • 2.Sg5#
    • 1...Qf1
      • 2.Sg5#
    • 1...Qg1
      • 2.Sf4#
      • 2.Sg5#
    • 1...Qh1
      • 2.Sf4#
      • 2.Sg5#
    • 1...Bb1
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Ba3
      • 2.Sxg7#
    • 1...Bf6
      • 2.Bh3#
    • 1...Se3
      • 2.Sf4#
      • 2.Sg5#
    • 1...Sd4
      • 2.Sxg7#
    • 1...f6
      • 2.Sxg7#
  • Tries
    • 1.Qxa2+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kf5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Re7#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Be5
        • 2.Qc8#
      • 1...Qg5
        • 2.Sxg5#
      • 1...Bf6
        • 2.Bh3#
      • 1...f5
        • 2.Qd6#
      • 1...f6
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::S(C),XQ(a)
    • Q(a);N_GUARD::S(G),XQ(a)
    • Q(a);N_GUARD::S(G)
    • B(b);N_GUARD::QAB1(B)
    • B(b);N_GUARD::QAB1(B),XB(b)
    • B(c);N_GUARD::S(C),XR(h)
    • B(c);S_CUTP(g)::B(A)
    • S(d);S_CUTB(c)::S(C),XR(h)
    • P(g);P_PINR(F),S_CUTB(c)::S(C),XR(h)
  • Tries
    • Try
      • Q(B);CHECK,XB(b)
      • Vars
        • K(e);P-FLIGHT::QAR1(B)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • R1(F)
    • Vars
      • B(b);N_GUARD::QAB1(B),XB(b)
      • B(c);SBLOCK::QAB(B)
      • Q(a);N_GUARD::S(G),XQ(a)
      • B(c);S_CUTP(g)::B(A)
      • P(g);P_PINR(F),SBLOCK::QAR1(B)
      • P(g);P_PINR(F),S_CUTB(c)::S(C),XR(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).