MESON Chess Problem Database

Problem Display
PID: 225445 (2K5/B5Np/p2P3p/3R4/2P1k2p/3r1R2/r1b1P3/1Q6 w - - 0 1)

Dyachuk, Vasyl Vasilovich

4th Prize, Praca, 1996

2K5/B5Np/p2P3p/3R4/2P1k2p/3r1R2/r1b1P3/1Q6

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxd3#
    • 1...Bb3
      • 2.Qxd3#
    • 1...Ba4
      • 2.Qxd3#
  • Tries
    • 1.Rff5?
      • threat
        • 2.Rde5#
      • 1...Rxd5
        • 2.Qh1#
      • 1...Ra5!
    • 1.Rd4+?
      • 1...Ke5
        • 2.Rf5#
      • 1...Rxd4!
    • 1.Rdf5?
      • threat
        • 2.R3f4#
      • 1...Rxf3
        • 2.Qb7#
      • 1...Rd4!
    • 1.Qf1?
      • threat
        • 2.Rf4#
      • 1...Rxf3
        • 2.Qxf3#
      • 1...Rxd5
        • 2.Re3#
      • 1...Rd4!
    • 1.Qg1?
      • threat
        • 2.Qg4#
      • 1...Rxf3
        • 2.Qd4#
      • 1...Rxd5
        • 2.Qe3#
      • 1...h5!
    • 1.Qh1?
      • threat
        • 2.Qxh4#
      • 1...Rxf3
        • 2.Qxf3#
      • 1...Rxd5
        • 2.Rf5#
      • 1...h3!
    • 1.exd3+?
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Kxf3!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qe7#
      • 1...Rxf3
        • 2.Rf5#
      • 1...Rxd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);OGATE,P_SPINR(c)::QAB1(A),XR(c)
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(E)
      • Vars
        • R(c);N_GUARD,P_SPINB(b),XR(E)::QAB(A)
      • Refutation
        • R(a);
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(C)
      • Refutation
        • R(c);P_SPINB(b),XR(E)
    • Try
      • R(E);
      • Threat
        • R1(C)
      • Vars
        • R(c);N_GUARD,P_SPINB(b),XR(C)::QAB(A)
      • Refutation
        • R(c);P_SPINB(b)
    • Try
      • Q(A);
      • Threat
        • R1(C)
      • Vars
        • R(c);OGATE,XR(C)::QAB1(A),XR(c)
        • R(c);N_GUARD,XR(E)::R1(C)
      • Refutation
        • R(c);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • R(c);N_GUARD,XR(C)::QAR1(A)
        • R(c);N_GUARD,XR(E)::QAR1(A)
      • Refutation
        • P(g);
    • Try
      • Q(A);
      • Threat
        • QAR(A),XP(e)
      • Vars
        • R(c);OGATE,P_SPINR(c),XR(C)::QAB1(A),XR(c)
        • R(c);N_GUARD,XR(E)::QAB(A)+R(C)
      • Refutation
        • P(e);
    • Try
      • P(B);CHECK,XR(c)
      • Vars
        • B(b);OGATE,P_SPINB(b),XP(B)::QAB1(A),XB(b)
      • Refutation
        • K(d);S_FLIGHT,XR(C)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • R(c);N_GUARD,XR(C)::QAB(A)+R(E)
      • R(c);OGATE,P_SPINR(c),XR(E)::QAB1(A),XR(c)
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).