MESON Chess Problem Database

Problem Display
PID: 43912 (1b6/3b2N1/Q2P3R/3pk2p/1K3N1r/2n1PnP1/1B3R2/1B6 w - - 0 1)

Mussuri, Petr Stepanovich

2nd Prize, Shakhmaty, 1929

1b6/3b2N1/Q2P3R/3pk2p/1K3N1r/2n1PnP1/1B3R2/1B6

#2

11 + 8

9565 Cahiers de l'Echiquier francais 1936
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4+
      • 2.gxf4#
    • 1...Ba4
      • 2.Re6#
    • 1...Bb5
      • 2.Re6#
    • 1...Bc6
      • 2.Re6#
    • 1...Be6
      • 2.Rxe6#
    • 1...Be8
      • 2.Re6#
    • 1...Bxd6+
      • 2.Qxd6#
    • 1...Sd4
      • 2.Sg6#
  • Tries
    • 1.Bxc3+?
      • 1...Sd4
        • 2.Sg6#
        • 2.Bxd4#
        • 2.exd4#
      • 1...d4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxd5#
      • 1...Rxf4+
        • 2.gxf4#
      • 1...Bxd6+
        • 2.Qxd6#
      • 1...Bxc6
        • 2.Re6#
      • 1...Be6
        • 2.Rxe6#
      • 1...Sd4
        • 2.Sg6#
      • 1...d4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(c);CHECK,OGATE,XS(G)::P(E),XR(c)
    • B(g);N_GUARD::R1(J)
    • B(g);N_GUARD::R1(J),XB(g)
    • B(h);CHECK,OGATE,XP(I)::QAB1(H),XB(h)
    • S(b);N_PINS(G),N_SPINS(a)::S(G)
  • Tries
    • Try
      • B(B);CHECK,XS(a)
      • Refutation
        • P(d);N_PINS(G),P_SPINP(d)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XP(d)
    • Vars
      • R(c);CHECK,OGATE,XS(G)::P(E),XR(c)
      • B(h);CHECK,OGATE,XP(I)::QAB1(H),XB(h)
      • B(g);N_GUARD,XQ(H)::R1(J)
      • B(g);N_GUARD::R1(J),XB(g)
      • S(b);N_PINS(G),N_SPINS(a)::S(G)
      • P(d);N_PINS(G),N_SPINS(a)::S(G)
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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).