MESON Chess Problem Database

Problem Display
PID: 230354 (Q1B5/R1r1Pp2/1PNk1P2/5p1q/bPp2P1p/B1N5/4r1P1/4R1bK w - - 0 1)

Shanshin, Valery Yurevich

Zadachi i Etyudi, 2001

Q1B5/R1r1Pp2/1PNk1P2/5p1q/bPp2P1p/B1N5/4r1P1/4R1bK

#2

14 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.e8S#
    • 1...Rb2
      • 2.e8S#
    • 1...Rc2
      • 2.e8S#
    • 1...Rd2
      • 2.e8S#
    • 1...Rf2
      • 2.b5#
      • 2.e8S#
    • 1...Rxg2
      • 2.e8S#
    • 1...Re3
      • 2.b5#
    • 1...Re5
      • 2.fxe5#
    • 1...Bh2
      • 2.b5#
    • 1...Be3
      • 2.e8S#
    • 1...Bc5
      • 2.bxc5#
  • Tries
    • 1.Rd1+?
      • 1...Rd2
        • 2.e8S#
      • 1...Bd4
        • 2.Rxd4#
        • 2.b5#
      • 1...Bxd1!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qd5#
      • 1...Qf3
        • 2.Sxf5#
      • 1...Re5
        • 2.fxe5#
      • 1...Rc5
        • 2.bxc5#
      • 1...Rc6
        • 2.Rd7#
      • 1...Rb7
        • 2.b5#
      • 1...Bc6
        • 2.b5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::P=S
    • R(b);N_GUARD,XP(C)::P=S
    • R(b);S_CUTB(a)::B(D)+P(F)
    • R(b);OGATE::P(G),XR(b)
    • B(a);N_GUARD::B(D)+P(F)
    • B(a);S_CUTR(b)::P=S
    • B(a);OGATE::P(F),XB(a)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b),S_CUTB(a),S_CUTB(c)::P=S
      • Refutation
        • B(c);XR(A)
  • Actual
    • S(I);
    • Threat
      • QAR1(M)
    • Vars
      • Q(g);N_GUARD,P_PINP(C)::S(I),XP(f)
      • R(b);OGATE::P(G),XR(b)
      • R(i);OGATE::P(F),XR(i)
      • R(i);OGATE::R1(K)
      • R(i);N_GUARD::B(D)+P(F)
      • B(c);P_PINP(C),S_CUTR(i)::B(D)+P(F)
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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).