MESON Chess Problem Database

Problem Display
PID: 254973 (2Q4n/1K3p2/3N1R2/2pk1p2/pn3P2/8/p3P3/1brB2B1 w - - 0 1)

Zabirokhin, Piotr

Zadachi i Etyudi, 2006

2Q4n/1K3p2/3N1R2/2pk1p2/pn3P2/8/p3P3/1brB2B1

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd1
      • 2.Qxc5#
    • 1...Rc2
      • 2.Qxf5#
    • 1...Bc2
      • 2.Qxc5#
    • 1...Sc2
      • 2.Qxf5#
      • 2.Qxc5#
      • 2.Qc6#
    • 1...Sd3
      • 2.Qc6#
    • 1...Sa6
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...c4
      • 2.Qc5#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qxf5#
        • 2.Qxc5#
      • 1...Rxc2
        • 2.Qxf5#
      • 1...Bxc2
        • 2.Qxc5#
      • 1...a1Q
        • 2.Qxc5#
      • 1...a1B
        • 2.Qxc5#
      • 1...Sd3
        • 2.Qc6#
      • 1...Sa6
        • 2.Qxf5#
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sg6
        • 2.Qxc5#
      • 1...c4
        • 2.Qxf5#
        • 2.Qxc4#
        • 2.Qc5#
      • 1...Rxg1!
    • 1.Bb3+?
      • 1...Rc4
        • 2.Bxc4#
        • 2.Qxc5#
      • 1...c4
        • 2.Qc5#
      • 1...axb3!
    • 1.e4+?
      • 1...fxe4
        • 2.Qf5#
      • 1...Bxe4!
  • Keys
    • 1.Sxf7!
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qxc5#
      • 1...Ke4
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD,XB(A)::QAR1(H),XP(f)
    • R(b);S_CUTB(a)::QAR2(H),XP(h)
    • B(a);S_CUTR(b)::QAR1(H),XP(f)
    • S(e);N_GUARD::QAB1(H)
    • S(e);N_GUARD::QAB1(H),XS(e)
    • P(f);S_CUTR(b)::QAR1(H)
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XB(A)::QAR2(H),XP(h)
        • B(a);XB(A)::QAR1(H),XP(f)
        • P(c);::QAR1(H),XP(f)
        • S(e);N_GUARD::QAB1(H)
        • S(e);N_GUARD::QAB1(H),XS(e)
        • S(j);::QAR1(H),XP(f)
      • Refutation
        • R(b);XB(B)
    • Try
      • B(A);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAR1(H)
      • Refutation
        • P(d);XB(A)
    • Try
      • P(C);CHECK
      • Vars
        • P(h);XP(C)::QAR2(H)
      • Refutation
        • B(a);XP(C)
  • Actual
    • S(E);XP(i)
    • Threat
      • QAB1(H)
    • Vars
      • K(g);N_GUARD,P_SPINP(f),S_CUTR(b),S_FLIGHT::QAR1(H),XP(f)
      • K(g);N_GUARD,S_CUTB(a),S_FLIGHT::QAB1(H),XP(h)
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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).