MESON Chess Problem Database

Problem Display
PID: 135583 (2bRR1B1/2Br4/1pN4b/rp6/1PP1Np2/3kp1p1/PQ3P2/1K2n3 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Schach-Aktiv, 1993

2bRR1B1/2Br4/1pN4b/rp6/1PP1Np2/3kp1p1/PQ3P2/1K2n3

#2

12 + 11

145 StrateGems 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rd6
      • 2.Rxd6#
    • 1...Ba6
      • 2.Rxd7#
    • 1...Bb7
      • 2.Rxd7#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sg2
      • 2.Qc2#
    • 1...Sf3
      • 2.Qc2#
    • 1...exf2
      • 2.Qd2#
    • 1...e2
      • 2.Qc3#
      • 2.Qd2#
      • 2.Qb3#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Se5#
      • 1...Rxd6
        • 2.Rxd6#
      • 1...exf2
        • 2.Qd4#
      • 1...bxc4
        • 2.Bxc4#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Bg7
        • 2.Bh7#
      • 1...Sf3
        • 2.Qc2#
      • 1...Re7!
  • Keys
    • 1.Bh7!
      • threat
        • 2.Se5#
      • 1...Kxc4
        • 2.Qb3#
      • 1...exf2
        • 2.Sd2#
      • 1...bxc4
        • 2.Sc5#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Bg7
        • 2.Sd6#
      • 1...Sf3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(j);OGATE::R1(J),XR(j)
    • R(j);OGATE::R(J),XR(j)
    • B(k);N_GUARD::R(J),XR(j)
    • S(a);N_GUARD::QAB1(C),XS(a)
    • S(a);N_GUARD::QAB1(C)
    • P(c);N_GUARD,XP(D)::QAR1(C)
  • Tries
    • Try
      • S(G);N_PINR(j)
      • Threat
        • S(H)
      • Vars
        • R(j);OGATE,P_SPINR(j),XS(G)::R(J),XR(j)
        • P(c);XP(D)::QAR1(C)
        • P(g);OGATE,XP(F)::B(L),XP(g)
        • S(a);N_GUARD::QAB1(C),XS(a)
        • B(i);S_CUTR(j)::B(L)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • R(j);
  • Actual
    • B(L);
    • Threat
      • S(H)
    • Vars
      • K(b);N_SPINR(j),S_FLIGHT,XP(F)::QAB1(C)
      • P(c);XP(D)::B(L)+S(G)
      • P(g);SBLOCK,XP(F)::B(L)+S(G),DCHECK
      • S(a);N_GUARD::QAB1(C),XS(a)
      • B(i);::B(L)+S(G)
      • S(a);N_GUARD::QAB1(C)
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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).