MESON Chess Problem Database

Problem Display
PID: 266800 (2n1R1r1/3pbQPq/2Pp2p1/2nBk1P1/3NN1pr/3p3p/b2P4/5RBK w - - 0 1)

Dyachuk, Vasyl Vasilovich

1/2 Prize, Wola Gulowska, 2009

2n1R1r1/3pbQPq/2Pp2p1/2nBk1P1/3NN1pr/3p3p/b2P4/5RBK

#2

12 + 14

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Qf4#
    • 1...g3
      • 2.Sf3#
    • 1...dxc6
      • 2.Sxc6#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qf4#
        • 2.Qf6#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Qxg7
        • 2.Qf4#
      • 1...Rxe8
        • 2.Qf4#
      • 1...Se4
        • 2.Qf4#
      • 1...Se6
        • 2.Re1#
      • 1...g3
        • 2.Sf3#
        • 2.Qf6#
      • 1...Rf8!
    • 1.Bh2+?
      • 1...g3
        • 2.Sf3#
      • 1...Kxd4!
    • 1.cxd7?
      • threat
        • 2.Sc6#
      • 1...Bxd5
        • 2.Qf4#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa7!
  • Keys
    • 1.Re1!
      • threat
        • 2.Sxc5#
      • 1...Bxd5
        • 2.Qf6#
      • 1...Sxe4
        • 2.Rxe4#
      • 1...Se6
        • 2.Sc3#
      • 1...Sb3
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sc5#
      • 1...Sa4
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sc5#
      • 1...Sa6
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sc5#
      • 1...Sb7
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sc5#
      • 1...g3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);P_PINS(F),SBLOCK,XB(G)::QAB1(J)
    • P(d);N_GUARD::S(E)
    • P(j);XP(I)::S(E),XP(j)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);CHECK,OGATE,XB(G)::QAR1(J),XB(a)
        • Q(l);XP(K)::QAB1(J)
        • R(n);N_SPINB(k),XR(L)::QAB1(J)
        • S(f);::QAB1(J)
        • S(f);N_GUARD,N_SPINB(k)::R(A)
      • Refutation
        • R(n);
    • Try
      • B(B);CHECK
      • Vars
        • P(d);P_SPINP(d)::S(E)
      • Refutation
        • K(g);N_SPINB(k),S_FLIGHT,XS(E)
    • Try
      • P(I);XP(j)
      • Threat
        • S(E)
      • Vars
        • B(a);P_PINS(F),SBLOCK,XB(G)::QAB1(J)
        • S(f);N_GUARD,N_SPINB(k)::QAR1(J),XS(f)
      • Refutation
        • S(m);
  • Actual
    • R(A);
    • Threat
      • R(A)+S(F),XS(f)
    • Vars
      • B(a);P_PINS(F),SBLOCK,XB(G)::QAB1(J)
      • S(f);OGATE,P_SPINS(f),XS(F)::R1(A),XS(f)
      • S(f);N_GUARD,N_SPINB(k)::R(A)+S(F)
      • P(d);N_GUARD::S(E)
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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).