Problem Display
PID: 173075 (3Q4/2n1P1bb/3Bp3/5pN1/Rrrk4/3P2p1/1n1PK3/N6B w - - 0 1)

Barulin, Mikhail Mikhailovich

64 Shakhmatnoe obozrenie, 1928

3Q4/2n1P1bb/3Bp3/5pN1/Rrrk4/3P2p1/1n1PK3/N6B

#2

10 + 10


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Sets
    • 1...Rb3
      • 2.Sc2#
      • 2.Sxb3#
    • 1...Rxa4
      • 2.Sb3#
    • 1...Rb5
      • 2.Sc2#
    • 1...Rb6
      • 2.Sc2#
    • 1...Rb7
      • 2.Sc2#
    • 1...Rb8
      • 2.Sc2#
    • 1...Rc1
      • 2.Sb3#
    • 1...Rc2
      • 2.Sxc2#
      • 2.Sb3#
    • 1...Rc5
      • 2.Sb3#
    • 1...Rc6
      • 2.Sb3#
    • 1...Sb5
      • 2.Sxe6#
    • 1...Sd5
      • 2.Sf3#
      • 2.Sxe6#
    • 1...Sa6
      • 2.Sxe6#
    • 1...Sa8
      • 2.Sxe6#
    • 1...Se8
      • 2.Sxe6#
  • Tries
    • 1.Bxg3+?
      • 1...Sd5
        • 2.Sxe6#
      • 1...Kc5!
    • 1.Bxb4+?
      • 1...Sd5
        • 2.Sf3#
      • 1...Ke5!
    • 1.Bf4+?
      • 1...Sd5
        • 2.Sxe6#
      • 1...Kc5!
    • 1.Rxb4?
      • threat
        • 2.Sc2#
        • 2.Sb3#
      • 1...Rxb4
        • 2.Sc2#
      • 1...g2!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Sf3#
      • 1...Sxa8
        • 2.Sxe6#
      • 1...Rb7
        • 2.Sc2#
      • 1...Rc6
        • 2.Sb3#

There are these versions: 173078

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • R(c);N_GUARD,XR(F)::S(A)
    • R(c);P_SPINR(d)::S(A)
    • R(d);P_SPINR(c)::S(A)
    • S(h);N_GUARD::S(G),XP(g)
  • Tries
    • Try
      • B(H);CHECK,XP(b)
      • Vars
        • S(h);P_SPINS(h)::S(G),XP(g)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • B(H);CHECK,XR(c)
      • Vars
        • S(h);P_SPINS(h)::S(G)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • B(H);CHECK
      • Vars
        • S(h);P_SPINS(h)::S(G),XP(g)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(F);P_PINR(d),XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(d);N_SPINR(d),XR(F)::S(A)
      • Refutation
        • P(b);
  • Actual
    • Q(J);
    • Threat
      • S(G)
    • Vars
      • S(h);N_GUARD,XQ(J)::S(G),XP(g)
      • R(c);P_SPINR(d)::S(A)
      • R(d);P_SPINR(c)::S(A)


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).