MESON Chess Problem Database

Problem Display
PID: 271287 (8/2np1KB1/n3P1Pr/p2P3R/Qpk2N2/3N3R/2PrP1B1/7b w - - 0 1)

Dobordzinidze, Aleksandr

Die Schwalbe, 1932

8/2np1KB1/n3P1Pr/p2P3R/Qpk2N2/3N3R/2PrP1B1/7b

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sb2#
    • 1...Sb5
      • 2.Qb3#
  • Tries
    • 1.Qc6+?
      • 1...Sc5
        • 2.Sb2#
        • 2.Qxc5#
      • 1...dxc6!
    • 1.Qa2+?
      • 1...b3
        • 2.Qxb3#
      • 1...Kb5!
  • Keys
    • 1.R3h4!
      • threat
        • 2.Sh3#
      • 1...Rxe2
        • 2.Sxe2#
      • 1...Rxd3
        • 2.Sxd3#
      • 1...Rxh5
        • 2.Sxh5#
      • 1...Rxg6
        • 2.Sxg6#
      • 1...Bxg2
        • 2.Sxg2#
      • 1...Sxd5
        • 2.Sxd5#
      • 1...Sxe6
        • 2.Sxe6#
      • 1...Sc5
        • 2.Sb2#
      • 1...Sb5
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK::S(D)
    • S(h);SBLOCK::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK,N_PINP(c)
      • Refutation
        • P(i);XQ(F)
    • Try
      • Q(F);CHECK,N_PINP(c)
      • Vars
        • P(c);P_SPINP(c)::QAB1(F),XP(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • R(E)+S(G)
    • Vars
      • R(b);XP(B)::R(E)+S(G),XR(b)
      • R(b);XS(D)::R(E)+S(G),XR(b)
      • R(g);XR(I)::R(E)+S(G),XR(g)
      • R(g);XP(K)::R(E)+S(G),XR(g)
      • B(a);XB(C)::R(E)+S(G),XB(a)
      • S(h);XP(H)::R(E)+S(G),XS(h)
      • S(h);XP(J)::R(E)+S(G),XS(h)
      • S(f);SBLOCK::S(D)
      • S(h);SBLOCK::QAB1(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).