MESON Chess Problem Database

Problem Display
PID: 180486 (8/2p3Q1/2P3P1/N2pn3/RP1kp3/2r1p3/B3p3/BK2N3 w - - 0 1)

Lider, Valentin Viktorovich

Sahs (Latvia), 1975

8/2p3Q1/2P3P1/N2pn3/RP1kp3/2r1p3/B3p3/BK2N3

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kb2?
      • 1...Rc2+
        • 2.Kxc2#
      • 1...Rb3+
        • 2.Kxb3#
      • 1...Rxc6
        • 2.Sxc6#
      • 1...Rc1
        • 2.Kxc1#
      • 1...Ra3
        • 2.Kxa3#
      • 1...Rd3
        • 2.Sc2#
      • 1...Rc4
        • 2.Sb3#
      • 1...Rc5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qc5#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Sxg6
        • 2.b5#
      • 1...Sd3
        • 2.Sc2#
      • 1...Sf3
        • 2.b5#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sg4
        • 2.b5#
      • 1...Sd7
        • 2.b5#
      • 1...Sf7
        • 2.b5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);N_PINR(b),P-FLIGHT
      • Vars
        • R(b);CHECK::B(A)+K(B),XR(b)
        • R(b);XP(H)::S(G),XR(b)
        • R(b);::B(A)+K(B),XR(b)
        • R(b);N_GUARD,SBLOCK::S(C)
        • R(b);N_GUARD,SBLOCK::S(G)
      • Refutation
        • R(b);
  • Actual
    • Q(J);N_PINS(g)
    • Threat
      • QAB1(J)
    • Vars
      • S(g);XP(H)::S(G),XS(g)
      • S(g);N_GUARD,XP(I)::R(E)+P(F)
      • S(g);SBLOCK::S(C)
      • S(g);N_GUARD::R(E)+P(F)
      • S(g);SBLOCK::S(G)
HTML5 logo

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).