MESON Chess Problem Database

Problem Display
PID: 71716 (2K1B3/4Q3/Pp3N2/2n2R2/Nk4qR/1Pr4r/PP1B4/4b3 w - - 0 1)

Romani, Lucien

1st Prize, Match: Czechoslovakia - France, 1937

2K1B3/4Q3/Pp3N2/2n2R2/Nk4qR/1Pr4r/PP1B4/4b3

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Bxc3#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qxb6#
      • 1...Ka5
        • 2.Qxb6#
      • 1...b5!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxb6#
      • 1...Ka5
        • 2.Qxb6#
      • 1...Sxb3
        • 2.a3#
      • 1...Sxa4
        • 2.Rxg4#
      • 1...Sxa6
        • 2.Rxg4#
      • 1...Sd3
        • 2.Qxc3#
      • 1...Se4
        • 2.Qc4#
      • 1...Se6
        • 2.Rb5#
      • 1...Sb7
        • 2.Rxg4#
      • 1...Sd7
        • 2.Rxg4#
      • 1...b5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD,S_CUTR(c)::B(C),XR(b)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAR2(J),XP(g)
      • Vars
        • K(d);N_SPINQ(e),S_FLIGHT::QAB1(J),XP(g)
      • Refutation
        • P(g);
  • Actual
    • Q(J);N_PINS(f)
    • Threat
      • QAR2(J),XP(g)
    • Vars
      • K(d);N_SPINQ(e),P_SPINP(g),P_SPINS(f),S_FLIGHT::QAB1(J),XP(g)
      • S(f);P_PINQ(J),SBLOCK,XP(D)::P(A)
      • S(f);N_GUARD,P_PINQ(J),XS(E)::R(F),XQ(e)
      • S(f);N_GUARD,P_PINQ(J),XP(H)::R(F),XQ(e)
      • S(f);OGATE,P_PINQ(J)::QAB1(J),XR(b)
      • S(f);N_SPINQ(e),OGATE,P_PINQ(J)::QAR1(J)
      • S(f);N_PINR(G),P_PINQ(J)::R1(G)
      • S(f);N_GUARD,P_PINQ(J)::R(F),XQ(e)
      • S(f);N_GUARD,N_PINR(G),P_PINQ(J)::R(F),XQ(e)
      • P(g);::S(I)
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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).