MESON Chess Problem Database

Problem Display
PID: 169052 (4RR2/K2p2PP/1BPkq1BQ/1P6/4p3/1pNnNn2/1p1p4/1b3r2 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Kopyl, Valery Volodimirovich

2nd Prize, SuperProblem 025. TT, 2012

4RR2/K2p2PP/1BPkq1BQ/1P6/4p3/1pNnNn2/1p1p4/1b3r2

#2

12 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sc4#
    • 1...Qh3
      • 2.Sxe4#
      • 2.Sc4#
    • 1...Qc4
      • 2.Sxc4#
      • 2.Sf5#
    • 1...Qg4
      • 2.Sc4#
    • 1...Qf5
      • 2.Sc4#
      • 2.Sxf5#
      • 2.Bxf5#
    • 1...Qf7
      • 2.Sxe4#
      • 2.Bxf7#
    • 1...Qg8
      • 2.Sxe4#
      • 2.Sf5#
      • 2.Bf7#
    • 1...Qe5
      • 2.Sc4#
    • 1...Qf6
      • 2.Sxe4#
      • 2.Sc4#
      • 2.Rxf6#
    • 1...Qxg6
      • 2.Sxe4#
      • 2.Sc4#
      • 2.Sf5#
      • 2.Qxg6#
    • 1...Se5
      • 2.Sxe4#
  • Tries
    • 1.Sxe4+?
      • 1...Qxe4
        • 2.Bxe4#
      • 1...Ke5!
    • 1.Sf5+?
      • 1...Qxf5
        • 2.Bxf5#
      • 1...Ke5!
    • 1.Bxe4?
      • threat
        • 2.Sc4#
      • 1...Ke5
        • 2.Sc4#
      • 1...dxc6
        • 2.Qxe6#
      • 1...Sde5
        • 2.Sf5#
      • 1...Sfe5!
    • 1.Bf5?
      • threat
        • 2.Sc4#
      • 1...Ke5
        • 2.Sc4#
      • 1...dxc6
        • 2.Qxe6#
      • 1...Sfe5
        • 2.Sxe4#
      • 1...Sde5!
    • 1.Bf7?
      • threat
        • 2.Sc4#
      • 1...dxc6
        • 2.Qxe6#
      • 1...Sde5
        • 2.Sf5#
      • 1...Sfe5
        • 2.Sxe4#
      • 1...Ke5!
  • Keys
    • 1.Bh5!
      • threat
        • 2.Sc4#
      • 1...Ke5
        • 2.Sc4#
      • 1...dxc6
        • 2.Qxe6#
      • 1...Sde5
        • 2.Sf5#
      • 1...Sfe5
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(i);P_SPINQ(j),S_FLIGHT::S(B)
    • Q(j);N_GUARD::S(B)
    • S(g);SBLOCK,S_CUTQ(j)::S(A),XP(h)
  • Tries
    • Try
      • S(A);CHECK,XP(h)
      • Vars
        • Q(j);OGATE,XS(A)::QAR(G)+B(F),XQ(j)
      • Refutation
        • K(i);P_SPINQ(j),S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • Q(j);OGATE,XS(B)::QAR(G)+B(F),XQ(j)
      • Refutation
        • K(i);P_SPINQ(j),S_FLIGHT
    • Try
      • B(F);P_PINQ(j),XP(h)
      • Threat
        • S(B)
      • Vars
        • K(i);S_FLIGHT::S(B)
        • P(k);N_GUARD,XP(E)::QAR1(G),XQ(j)
        • S(f);SBLOCK::S(B)
      • Refutation
        • S(g);
    • Try
      • B(F);P_PINQ(j)
      • Threat
        • S(B)
      • Vars
        • K(i);S_FLIGHT::S(B)
        • P(k);N_GUARD,XP(E)::QAR1(G),XQ(j)
        • S(g);SBLOCK::S(A),XP(h)
      • Refutation
        • S(f);
    • Try
      • B(F);P_PINQ(j)
      • Threat
        • S(B)
      • Vars
        • P(k);N_GUARD,XP(E)::QAR1(G),XQ(j)
        • S(f);SBLOCK::S(B)
        • S(g);SBLOCK::S(A),XP(h)
      • Refutation
        • K(i);S_FLIGHT
  • Actual
    • B(F);P_PINQ(j)
    • Threat
      • S(B)
    • Vars
      • K(i);S_FLIGHT::S(B)
      • P(k);N_GUARD,XP(E)::QAR1(G),XQ(j)
      • S(f);SBLOCK::S(B)
      • S(g);SBLOCK::S(A),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).