MESON Chess Problem Database

Problem Display
PID: 57519 (1N2b1B1/2B4r/R6r/1pk2nbR/qp2P3/pP2P2p/2N4K/6Q1 w - - 0 1)

Pape, Edouard

Het Belgisch Schaakbord (L'Echiquier Belge), 1953

1N2b1B1/2B4r/R6r/1pk2nbR/qp2P3/pP2P2p/2N4K/6Q1

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe3
      • 2.Rxf5#
      • 2.Qxe3#
    • 1...Bf4+
      • 2.exf4#
    • 1...Bh4
      • 2.Rxf5#
    • 1...Bf6
      • 2.Bd6#
    • 1...Be7
      • 2.Rxf5#
    • 1...Bd8
      • 2.Rxf5#
    • 1...Bg6
      • 2.Rc6#
    • 1...Bf7
      • 2.Sd7#
    • 1...Sxe3
      • 2.Rxg5#
      • 2.Qxe3#
    • 1...Sd4
      • 2.exd4#
    • 1...Sd6
      • 2.Bb6#
  • Keys
    • 1.Sa1!
      • threat
        • 2.Qc1#
      • 1...Bf4+
        • 2.exf4#
      • 1...Qxb3
        • 2.Sxb3#
      • 1...Bxe3
        • 2.Qxe3#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Bf6
        • 2.Bd6#
      • 1...Bf7
        • 2.Sd7#
      • 1...Sd4
        • 2.exd4#
      • 1...Sd6
        • 2.Bb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(h);CHECK,OGATE,P_SPINS(g)::QAB(A)+P(E),XB(h)
    • B(h);OGATE,P_SPINS(g)::R(G),XS(g)
    • B(h);P_SPINS(g),S_CUTR(i)::B(I)
    • B(k);N_GUARD,S_CUTR(i)::R1(H)
    • B(k);N_GUARD,S_CUTR(j)::S(J)
    • S(g);OGATE,P_SPINB(h)::P(E),XS(g)
    • S(g);P_SPINB(h),SBLOCK,S_CUTR(i)::B(I)
  • Actual
    • S(B);
    • Threat
      • QAR(A)
    • Vars
      • B(h);CHECK,OGATE,P_SPINS(g)::QAB(A)+P(E),XB(h)
      • Q(c);XP(D)::S(B),XQ(c)
      • B(h);OGATE,P_SPINB(h),P_SPINS(g),XP(E)::QAB(A),XB(h)
      • S(g);OGATE,P_SPINB(h),P_SPINS(g),XP(E)::QAB(A),XS(g)
      • B(h);P_SPINS(g),S_CUTR(i)::B(I)
      • B(k);N_GUARD,S_CUTR(j)::S(J)
      • S(g);OGATE,P_SPINB(h)::P(E),XS(g)
      • S(g);P_SPINB(h),SBLOCK,S_CUTR(i)::B(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).