MESON Chess Problem Database

Problem Display
PID: 227353 (8/1q1p3b/r2p4/1pPP2Q1/N3kB2/1BP2pK1/1n3P1p/6bN w - - 0 1)

Semrinec, Marian

Sachova skladba, 2020

8/1q1p3b/r2p4/1pPP2Q1/N3kB2/1BP2pK1/1n3P1p/6bN

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qxd5#
    • 1...Bxf2+
      • 2.Sxf2#
    • 1...Bg6
      • 2.Qxg6#
    • 1...Bg8
      • 2.Qg6#
    • 1...Sd1
      • 2.Bc2#
    • 1...Sxa4
      • 2.Bc2#
    • 1...Sc4
      • 2.Bc2#
    • 1...dxc5
      • 2.Sxc5#
  • Tries
    • 1.Sxb2?
      • threat
        • 2.Bc2#
      • 1...Bxf2+
        • 2.Sxf2#
      • 1...Qxd5
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Bf5!
    • 1.Qe7+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kf5!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Sxb2#
        • 2.Qe3#
      • 1...dxe5!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qxh7#
      • 1...Bxf2+
        • 2.Sxf2#
      • 1...Kd3
        • 2.Qxf3#
      • 1...Qxd5
        • 2.Qxd5#
      • 1...dxc5
        • 2.Sxc5#
      • 1...Bf5
        • 2.Qxf3#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Bg8
        • 2.Qg6#
      • 1...Sc4
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(i);OGATE,XP(I)::QAB1(J),XQ(i)
    • B(a);CHECK,XP(B)::S(A),XB(a)
    • B(k);N_GUARD::QAB(J),XB(k)
    • B(k);N_GUARD::QAB(J)
    • S(b);N_GUARD::B(C)
    • S(b);N_GUARD,XS(F)::B(C)
    • P(h);XP(H)::S(F),XP(h)
  • Tries
    • Try
      • S(F);XS(b)
      • Threat
        • B(C)
      • Vars
        • B(a);CHECK,XP(B)::S(A),XB(a)
      • Refutation
        • B(k);
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAR1(J)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(J);CHECK
      • Refutation
        • P(h);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • QAB(J),XB(k)
    • Vars
      • B(a);CHECK,XP(B)::S(A),XB(a)
      • K(e);S_FLIGHT::QAR2(J),XP(d)
      • Q(i);OGATE,XP(I)::QAB1(J),XQ(i)
      • P(h);XP(H)::S(F),XP(h)
      • B(k);SBLOCK::QAB1(J),XP(d)
      • B(k);N_GUARD::QAB(J),XB(k)
      • B(k);N_GUARD::QAB(J)
      • S(b);N_GUARD::B(C)
HTML5 logo

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).