MESON Chess Problem Database

Problem Display
PID: 241070 (2NQ4/2PB1P2/r3PP2/p2N1k1K/4pP2/b1p1P2p/3R2p1/B7 w - - 0 1)

Gavriliv, Evgeni M

Schweizerische Schachzeitung, 1989

2NQ4/2PB1P2/r3PP2/p2N1k1K/4pP2/b1p1P2p/3R2p1/B7

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sce7#
    • 1...Ra7
      • 2.e7#
    • 1...Ra8
      • 2.e7#
    • 1...Bc1
      • 2.Sce7#
    • 1...Bb2
      • 2.Sce7#
    • 1...Bd6
      • 2.e7#
    • 1...Be7
      • 2.Scxe7#
  • Tries
    • 1.Sdb6?
      • threat
        • 2.Rd5#
      • 1...cxd2
        • 2.e7#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Be7!
    • 1.Sde7+?
      • 1...Kxf6
        • 2.Bxc3#
        • 2.Qh8#
        • 2.f8Q#
      • 1...Bxe7!
    • 1.Sd6+?
      • 1...Bxd6
        • 2.e7#
      • 1...Rxd6!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Rd5#
      • 1...cxd2
        • 2.Se7#
      • 1...Rd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(h);S_CUTB(b)::S(L)
    • R(h);N_GUARD::B(J)+P(G)
    • B(b);N_GUARD::S(L)
    • B(b);S_CUTR(h)::B(J)+P(G)
    • B(b);N_GUARD::S(L),XB(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(B)
      • Vars
        • P(c);XR(B)::B(J)+P(G)
        • B(b);N_GUARD::S(L),XB(b)
      • Refutation
        • B(b);
    • Try
      • S(E);CHECK
      • Refutation
        • B(b);XS(E)
    • Try
      • S(L);CHECK
      • Vars
        • B(b);XS(L)::B(J)+P(G)
      • Refutation
        • R(h);XS(L)
  • Actual
    • S(E);
    • Threat
      • R(B)
    • Vars
      • P(c);XR(B)::S(L)
      • R(h);N_GUARD::S(L),XR(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).