MESON Chess Problem Database

Problem Display
PID: 102451 (K1Bb1B2/p1p2R2/1p6/1Q1nkNR1/r2p4/r2p2P1/1NP1PP2/2q4b w - - 0 1)

Segers, Marcel

L'Echiquier, 1935

K1Bb1B2/p1p2R2/1p6/1Q1nkNR1/r2p4/r2p2P1/1NP1PP2/2q4b

#2

12 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se3+?
      • 1...Ke4
        • 2.Qxd5#
      • 1...Bxg5!
    • 1.Sd6+?
      • 1...Bxg5
        • 2.Rf5#
      • 1...Qxg5!
    • 1.Se7+?
      • 1...Ke4
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qc6#
      • 1...Qxg5!
    • 1.Bg7+?
      • 1...Bf6
        • 2.Re7#
      • 1...Ke4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qe6#
      • 1...Ke4
        • 2.Qe6#
      • 1...Sc3
        • 2.Sxd3#
      • 1...Se3
        • 2.f4#
      • 1...Sb4
        • 2.Sc4#
      • 1...Sf4
        • 2.Se7#
      • 1...Sf6
        • 2.Se3#
      • 1...Se7
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(h);N_SPINS(g),P-FLIGHT::QAB1(F),XS(g)
      • Refutation
        • B(l);XR(H)
    • Try
      • S(G);CHECK
      • Vars
        • B(l);XR(H)::R1(I)
      • Refutation
        • Q(a);XR(H)
    • Try
      • S(G);CHECK
      • Vars
        • K(h);N_SPINS(g),P-FLIGHT::QAB1(F),XS(g)
        • K(h);N_SPINS(g),S_FLIGHT::QAR1(F)
      • Refutation
        • Q(a);XR(H)
    • Try
      • B(L);CHECK
      • Vars
        • B(l);P_SPINB(l)::R(I)
      • Refutation
        • K(h);N_SPINS(g),P-FLIGHT
  • Actual
    • Q(F);N_PINS(g)
    • Threat
      • QAR1(F)
    • Vars
      • K(h);P-FLIGHT,P_SPINS(g)::QAR2(F)
      • S(g);P_PINQ(F),S_CUTR(c)::S(A),XP(d)
      • S(g);N_GUARD,P_PINQ(F),S_CUTQ(a)::P(D)
      • S(g);P_PINQ(F),S_CUTR(e)::S(A)
      • S(g);P_PINQ(F),S_CUTQ(a)::R(H)+S(G)
      • S(g);P_PINQ(F),S_CUTB(l)::R(H)+S(G)
      • S(g);N_GUARD,P_PINQ(F),S_CUTB(l)::B(L)
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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).