MESON Chess Problem Database

Problem Display
PID: 247581 (b2Nrq2/B1p1Rp2/6p1/2Pk1nR1/Q1p1nP2/2p2N2/5PB1/2K5 w - - 0 1)

Shanshin, Valery Yurevich

Zadachi i Etyudi, 2003

b2Nrq2/B1p1Rp2/6p1/2Pk1nR1/Q1p1nP2/2p2N2/5PB1/2K5

#2

11 + 11

5007 Zadachi i Etyudi 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd8
      • 2.Re5#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Sd2
      • 2.Qd7#
    • 1...Sxf2
      • 2.Qd7#
    • 1...Sg3
      • 2.Qd1#
      • 2.Qd7#
    • 1...Sd6
      • 2.Qd1#
    • 1...Sf6
      • 2.Qd1#
  • Tries
    • 1.Bf1?
      • threat
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Rxd8
        • 2.Bxc4#
        • 2.Re5#
      • 1...Sd2
        • 2.Qd7#
      • 1...Sd6
        • 2.Qd1#
      • 1...Sxc5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxc4#
      • 1...Kd4
        • 2.Qxc4#
      • 1...Se3
        • 2.Qd7#
      • 1...Sd6
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(j);N_GUARD,XS(K)::R1(J)
    • B(i);N_GUARD::QAB1(E),XB(i)
    • S(c);N_GUARD::QAR2(E)
    • S(c);N_GUARD,XP(B)::QAR2(E)
    • S(c);N_GUARD::QAR(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);N_GUARD::QAR2(E)
        • S(c);N_GUARD::QAR(E)
      • Refutation
        • S(c);XP(G)
  • Actual
    • S(D);N_PINS(e),P_PINS(c)
    • Threat
      • QAB1(E),XP(b)
    • Vars
      • K(d);N_SPINS(c),P-FLIGHT,P_SPINP(b)::QAR1(E),XP(b)
      • S(e);N_GUARD::QAR2(E)
      • S(e);N_GUARD::QAR(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).