MESON Chess Problem Database

Problem Display
PID: 86746 (r5NN/R4r2/1P5n/q3kPp1/2Pp3n/2pKpQPP/2B2B1b/5R2 w - - 0 1)

Pletenev, Nikolai Alexeyevich

Uralski Skazi, 1990

r5NN/R4r2/1P5n/q3kPp1/2Pp3n/2pKpQPP/2B2B1b/5R2

#2

13 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Qd5#
    • 1...Qxb6
      • 2.Qd5#
    • 1...Qa1
      • 2.Qd5#
    • 1...Qa2
      • 2.Qd5#
    • 1...Qa3
      • 2.Qd5#
    • 1...Qa4
      • 2.Qd5#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qa6
      • 2.Qd5#
    • 1...Qxa7
      • 2.Qd5#
    • 1...Bxg3
      • 2.Bxg3#
    • 1...Sg4
      • 2.Sxf7#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Rxa5+?
      • 1...Kd6
        • 2.Qd5#
      • 1...Rxa5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qe6#
      • 1...Kxf5
        • 2.Kxd4#
        • 2.Qe4#
      • 1...Qxb6
        • 2.Qd5#
      • 1...Rxf5
        • 2.Re7#
      • 1...Bxg3
        • 2.Bxg3#
      • 1...S4xf5
        • 2.Sg6#
      • 1...S6xf5
        • 2.Sxf7#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Re7
        • 2.Qf6#
      • 1...Re8
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD::QAR1(E)
    • Q(f);N_GUARD,XP(J)::QAR1(E)
    • Q(f);N_GUARD::QAR1(E),XQ(f)
    • Q(f);N_GUARD,P_PINP(H)::QAR1(E)
    • Q(f);N_GUARD,XR(K)::QAR1(E)
    • B(a);OGATE,XP(F)::B(C),XB(a)
    • S(i);N_GUARD::S(M),XR(j)
    • P(h);N_GUARD::QAB1(E)
  • Tries
    • Try
      • R(K);CHECK,XQ(f)
      • Vars
        • K(g);S_FLIGHT::QAR1(E)
      • Refutation
        • R(k);XR(K)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • Q(f);N_GUARD,XP(J)::QAR1(E)
      • R(j);N_GUARD,SBLOCK,XP(I)::R(K)
      • B(a);OGATE,XP(F)::B(C),XB(a)
      • S(e);N_GUARD,SBLOCK,XP(I)::S(M)
      • S(i);N_GUARD,SBLOCK,XP(I)::S(M),XR(j)
      • Q(f);N_GUARD::QAR1(E),XQ(f)
      • R(j);N_GUARD::QAB1(E),XR(j)
      • R(j);N_GUARD::QAB1(E)
      • R(k);N_GUARD::R(K),XQ(f)
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).