MESON Chess Problem Database

Problem Display
PID: 32394 (6KQ/N2R3B/2p1pr1p/4k3/b2nPp2/2n5/1B2R3/b7 w - - 0 1)

Pape, Edouard

De Problemist, 1928

6KQ/N2R3B/2p1pr1p/4k3/b2nPp2/2n5/1B2R3/b7

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe4
      • 2.Rxe4#
    • 1...Scb5
      • 2.Sxc6#
    • 1...Sd5
      • 2.exd5#
    • 1...Sdb5
      • 2.Sxc6#
    • 1...Sf5
      • 2.exf5#
  • Keys
    • 1.Kg7!
      • threat
        • 2.Qb8#
      • 1...Rg6+
        • 2.Kxg6#
      • 1...Rf7+
        • 2.Kxf7#
      • 1...Sf5+
        • 2.exf5#
      • 1...Rf8
        • 2.Kxf8#
      • 1...Scb5
        • 2.Sxc6#
      • 1...Sd5
        • 2.exd5#
      • 1...Sdb5
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(b);OGATE,P_SPINS(d),XP(C)::R1(B),XS(b)
    • S(b);P_SPINS(d),S_CUTB(c)::S(D),XP(g)
    • S(b);OGATE,P_SPINS(d)::R(B)+P(C),XS(b)
    • S(d);N_GUARD,P_SPINS(b),S_CUTB(c)::S(D),XP(g)
    • S(d);OGATE,P_SPINS(b)::R(B)+P(C),XS(d)
  • Actual
    • K(G);N_PINR(i),P-FLIGHT
    • Threat
      • QAB(H)
    • Vars
      • R(i);CHECK::QAB(H)+K(G),XR(i)
      • S(d);CHECK,OGATE,P_SPINS(b)::R(B)+P(C),XS(d)
      • R(i);::QAB(H)+K(G),XR(i)
      • S(b);P_SPINS(d),S_CUTB(c)::S(D),XP(g)
      • S(b);OGATE,P_SPINS(d)::R(B)+P(C),XS(b)
      • S(d);N_GUARD,P_SPINS(b),S_CUTB(c)::S(D),XP(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).