MESON Chess Problem Database

Problem Display
PID: 237322 (7b/8/8/K2R4/b6r/Q4B1n/pR2P2N/2BNk1n1 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Pat a Mat, 1995

7b/8/8/K2R4/b6r/Q4B1n/pR2P2N/2BNk1n1

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3+
      • 2.Qxc3#
    • 1...Sxe2
      • 2.Rxe2#
  • Tries
    • 1.Qb4+?
      • 1...Bc3
        • 2.Qxc3#
      • 1...Rxb4!
    • 1.Qe3?
      • threat
        • 2.Qd2#
      • 1...Bc3+
        • 2.Qxc3#
      • 1...Bxd1
        • 2.Bd2#
      • 1...Sxf3
        • 2.exf3#
      • 1...Rd4!
  • Keys
    • 1.e4!
      • threat
        • 2.Bd2#
      • 1...Bc3+
        • 2.Qxc3#
      • 1...Bxd1
        • 2.Rxd1#
      • 1...Sxf3
        • 2.Qe3#
      • 1...Se2
        • 2.Rxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(g);CHECK,N_GUARD::QAB(F),XB(g)
    • S(b);OGATE,XP(D)::R1(C),XS(b)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • B(g);N_GUARD,P_PINQ(F),P_SPINB(g)::QAB(F),XB(g)
      • Refutation
        • R(f);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • B(g);CHECK,N_GUARD::QAB(F),XB(g)
        • B(e);SBLOCK,XS(B)::B(A)
        • S(b);OGATE,XB(G)::QAR(F)+P(D),XS(b)
      • Refutation
        • R(f);
  • Actual
    • P(D);
    • Threat
      • B(A)
    • Vars
      • B(g);CHECK,N_GUARD::QAB(F),XB(g)
      • B(e);OGATE,XS(B)::R1(I),XB(e)
      • S(b);N_GUARD,XB(G)::QAR2(F)
      • S(b);N_GUARD::R1(C),XS(b)
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).