MESON Chess Problem Database

Problem Display
PID: 61430 (5K2/4R3/p3pB2/2Ppb2Q/N1k1Pp2/2p5/n1N1P2r/1R6 w - - 0 1)

Dyachuk, Vasyl Vasilovich

1/2 Prize, Praca, 1999

5K2/4R3/p3pB2/2Ppb2Q/N1k1Pp2/2p5/n1N1P2r/1R6

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Qxe2#
    • 1...Bd4
      • 2.Sa3#
    • 1...Bd6
      • 2.Sa3#
    • 1...Bc7
      • 2.Sa3#
    • 1...Bb8
      • 2.Sa3#
    • 1...Sc1
      • 2.Rb4#
    • 1...Sb4
      • 2.Rxb4#
    • 1...d4
      • 2.Sa3#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Sa3#
      • 1...Rxe2
        • 2.Qxe2#
      • 1...dxe4!
    • 1.Qxe5?
      • threat
        • 2.Sa3#
        • 2.Qd4#
      • 1...Rxe2
        • 2.Qd4#
      • 1...Sb4
        • 2.Sa3#
        • 2.Rxb4#
      • 1...d4
        • 2.Sa3#
        • 2.Sb6#
        • 2.Qxd4#
        • 2.Qxe6#
      • 1...Rh8+!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Sb6#
      • 1...Bd6+
        • 2.cxd6#
      • 1...Rxe2
        • 2.Qxe2#
      • 1...Bxc7
        • 2.Sa3#
      • 1...Sb4
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(b);OGATE,XP(C)::QAB(G),XR(b)
    • B(g);::S(B)
    • B(g);P_PINR(I)::S(B)
    • S(a);N_GUARD::R1(A)
    • S(a);N_GUARD::R1(A),XS(a)
    • P(f);SBLOCK::S(B)
  • Tries
    • Try
      • B(H);XB(g)
      • Threat
        • S(B)
      • Vars
        • R(b);OGATE,XP(C)::QAB(G),XR(b)
      • Refutation
        • P(f);XP(E)
    • Try
      • Q(G);XB(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XP(C)::QAR1(G)
      • Refutation
        • R(b);CHECK
  • Actual
    • R(I);
    • Threat
      • S(D)
    • Vars
      • B(g);CHECK,OGATE::R(I)+P(F),XB(g)
      • R(b);OGATE,XP(C)::QAB(G),XR(b)
      • B(g);XR(I)::S(B)
      • S(a);N_GUARD::R1(A),XS(a)
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).