MESON Chess Problem Database

Problem Display
PID: 266648 (8/B1K5/1N6/Rb4P1/1P1Pk1pP/1P1N1rP1/3PPR2/bB5Q w - - 0 1)

Dyachuk, Vasyl Vasilovich

4th Prize, Problemist Ukraini, 2018

8/B1K5/1N6/Rb4P1/1P1Pk1pP/1P1N1rP1/3PPR2/bB5Q

#2

16 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4+?
      • 1...Kxd4
        • 2.Sc4#
        • 2.Sd7#
      • 1...Bd3!
    • 1.Rxf3?
      • threat
        • 2.Rf4#
      • 1...Kxd4
        • 2.Rf4#
      • 1...gxf3!
    • 1.Qxf3+?
      • 1...Kxd4
        • 2.Sa4#
        • 2.Sc4#
        • 2.Sd5#
        • 2.Sd7#
        • 2.Sa8#
        • 2.Sc8#
        • 2.Qxg4#
        • 2.Qd5#
        • 2.Qe3#
        • 2.Qf4#
        • 2.e3#
      • 1...gxf3!
    • 1.e3?
      • threat
        • 2.Sc5#
      • 1...Kf5
        • 2.Sf4#
      • 1...Bxd3
        • 2.Re5#
      • 1...Bxd4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sf4#
      • 1...Kd5
        • 2.Sf4#
      • 1...Kf5
        • 2.Sc5#
      • 1...Bxc4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • R(E);XR(b)
      • Threat
        • QAB(B)+R(E),DCHECK
      • Vars
        • K(c);P-FLIGHT,XP(J)::R(E)
      • Refutation
        • P(d);P_SPINP(d),XR(E)
    • Try
      • Q(B);CHECK,XR(b)
      • Refutation
        • P(d);XQ(B)
    • Try
      • P(D);
      • Threat
        • B(A)+S(G),DCHECK
      • Vars
        • K(c);P_SPINB(e),S_FLIGHT::B(A)+S(G)
        • B(e);OGATE,P_SPINB(e),XS(G)::R1(L)
      • Refutation
        • B(a);XP(J)
  • Actual
    • S(N);
    • Threat
      • B(A)+S(G)
    • Vars
      • K(c);P_SPINB(e),S_FLIGHT::S(G)
      • K(c);N_GUARD,P_SPINB(e),S_FLIGHT::B(A)+S(G)
      • B(e);OGATE,XS(N)::R1(L)
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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).