MESON Chess Problem Database

Problem Display
PID: 174880 (1qb5/1p1P4/nPp2Npp/K2Q3P/2B1Pk1B/1pP1NPp1/6P1/2n1R3 w - - 0 1)

Dyachuk, Vasyl Vasilovich

1st Prize, Albrecht-100 MT, 2017

1qb5/1p1P4/nPp2Npp/K2Q3P/2B1Pk1B/1pP1NPp1/6P1/2n1R3

#2

14 + 11

23 Die Schwalbe 2017
145 StrateGems 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Qxd6#
    • 1...Qa7
      • 2.Qd6#
    • 1...Qa8
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...gxh5
      • 2.Sxh5#
      • 2.Qf5#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Seg4?
      • threat
        • 2.Qd2#
      • 1...cxd5
        • 2.Sxd5#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qd6
        • 2.Qxd6#
      • 1...Sd3!
    • 1.Sfg4?
      • threat
        • 2.Qf7#
      • 1...cxd5
        • 2.Sxd5#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qd6
        • 2.Qxd6#
      • 1...Bxd7!
    • 1.Qf7?
      • threat
        • 2.Sfg4#
      • 1...Qe5+
        • 2.Sfd5#
      • 1...Ke5
        • 2.Bxg3#
      • 1...Bxd7
        • 2.Sxd7#
      • 1...Qd6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Seg4#
      • 1...Qe5+
        • 2.Sed5#
      • 1...Ke5
        • 2.Seg4#
      • 1...Qd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(j);N_GUARD::QAB(J),XQ(j)
    • Q(j);N_GUARD::QAB(J)
    • S(e);S_CUTQ(j)::QAB(J)
    • P(g);N_GUARD::QAR1(J)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB(J)
      • Vars
        • P(f);XQ(J)::S(M),XP(f)
        • Q(j);N_GUARD,P_PINQ(J)::QAB1(J),XQ(j)
        • Q(j);N_GUARD::QAB(J),XQ(j)
      • Refutation
        • S(a);
    • Try
      • S(M);
      • Threat
        • QAR(J)
      • Vars
        • P(f);XQ(J)::S(D),XP(f)
        • Q(j);N_GUARD,P_PINQ(J)::QAB1(J),XQ(j)
        • Q(j);N_GUARD::QAB(J),XQ(j)
      • Refutation
        • B(k);XP(N)
    • Try
      • Q(J);
      • Threat
        • QAR(J)+S(M)
      • Vars
        • Q(j);CHECK,SBLOCK::QAR(J)+S(M),DCHECK
        • K(d);S_FLIGHT::B(H),XP(c)
        • B(k);XP(N)::QAR(J)+S(M),XB(k)
      • Refutation
        • Q(j);
  • Actual
    • Q(J);
    • Threat
      • QAB(J)+S(D)
    • Vars
      • Q(j);CHECK,SBLOCK::QAB(J)+S(D),DCHECK
      • K(d);S_FLIGHT::S(D)
      • Q(j);N_GUARD::QAB(J),XQ(j)
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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).