MESON Chess Problem Database

Problem Display
PID: 78897 (6B1/2KRp2N/2nPr3/1p1kb2R/1r2p3/1P1PQ3/8/Bb3Nq1 w - - 0 1)

Commandeur, Henri

L'Echiquier de Paris, 1955

6B1/2KRp2N/2nPr3/1p1kb2R/1r2p3/1P1PQ3/8/Bb3Nq1

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sa5
      • 2.Rxe5#
    • 1...Sa7
      • 2.Rxe5#
    • 1...Sb8
      • 2.Rxe5#
    • 1...Sd8
      • 2.Rxe5#
    • 1...exd6
      • 2.Sf6#
      • 2.Rxd6#
  • Tries
    • 1.Qxe4+?
      • 1...Kc5
        • 2.Qxc6#
      • 1...Rxe4!
  • Keys
    • 1.Kb6!
      • threat
        • 2.dxe7#
      • 1...Qxe3+
        • 2.Sxe3#
      • 1...Qxg8
        • 2.Qc5#
      • 1...exd6
        • 2.Sf6#
      • 1...Qg5
        • 2.Qc5#
      • 1...Sd4
        • 2.Qxe4#
      • 1...Sa5
        • 2.Rxe5#
      • 1...Sa7
        • 2.Rxe5#
      • 1...Sb8
        • 2.Rxe5#
      • 1...Sd8
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::R1(F),XB(g)
  • Tries
    • Try
      • Q(E);CHECK,XP(d)
      • Vars
        • K(f);N_SPINR(i),OGATE,P-FLIGHT::QAR1(E),XS(h)
      • Refutation
        • R(c);XQ(E)
  • Actual
    • K(H);N_SPINP(G),P_SPINQ(E),S_FLIGHT
    • Threat
      • R(I)+P(G),XP(j)
    • Vars
      • Q(b);CHECK,XQ(E)::S(B),XQ(b)
      • Q(b);N_GUARD,N_PINQ(E),N_SPINR(i),XB(K)::QAR1(E)
      • P(j);N_GUARD,P_SPINP(j),XP(G)::S(J)
      • Q(b);N_GUARD,N_PINQ(E),N_SPINB(g)::QAR1(E)
      • S(h);N_PINQ(E),P_PINP(G)::QAB1(E),XP(d)
      • S(h);N_GUARD,P_PINP(G)::R1(F),XB(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).