MESON Chess Problem Database

Problem Display
PID: 16554 (3r4/3pNB2/Q3n2p/1r3p1K/Nnkp1R2/Bp6/1P2P3/8 w - - 0 1)

Stewart, John

Chess, 1941

3r4/3pNB2/Q3n2p/1r3p1K/Nnkp1R2/Bp6/1P2P3/8

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Sb6#
    • 1...Sc2
      • 2.Sb6#
    • 1...Sd3
      • 2.Sb6#
    • 1...Sc6
      • 2.Sb6#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Rxd4#
      • 1...Kd5
        • 2.Rxd4#
      • 1...Sxc6
        • 2.Sb6#
      • 1...Sc2
        • 2.Sb6#
      • 1...Sd5
        • 2.Sa5#
        • 2.Se5#
      • 1...d5
        • 2.Sa5#
        • 2.Se5#
      • 1...dxc6!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Rxd4#
      • 1...Kd5
        • 2.Qxb5#
      • 1...Sc2
        • 2.Sb6#
      • 1...Sd5
        • 2.Sd6#
      • 1...Sc6
        • 2.Sb6#
      • 1...d5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(b);::S(D)
  • Tries
    • Try
      • S(H);
      • Threat
        • R1(E),XP(d)
      • Vars
        • K(c);N_SPINP(d),N_SPINR(e),S_FLIGHT::R1(E),XP(d)
        • S(b);XS(H)::S(D)
        • S(b);::S(D)
      • Refutation
        • P(i);XS(H)
  • Actual
    • S(H);P_SPINS(H),XP(f)
    • Threat
      • R1(E),XP(d)
    • Vars
      • K(c);N_PINS(H),N_SPINP(d),N_SPINR(e),S_FLIGHT::QAR2(G),XR(e)
      • S(b);::S(D)
      • S(b);N_PINS(H),N_SPINS(g),SBLOCK::S(H)
      • P(i);N_PINS(H),N_SPINS(g)::S(H)
HTML5 logo

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).