MESON Chess Problem Database

Problem Display
PID: 64545 (B7/2pP1N2/p1r1R2p/1pr1B2K/Rn1nk3/1b1N3Q/2pPpP2/b1q5 w - - 0 1)

Stimson, James Frank (Ua Tane)

Good Companions (December), 1920

B7/2pP1N2/p1r1R2p/1pr1B2K/Rn1nk3/1b1N3Q/2pPpP2/b1q5

#2

11 + 14

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5+
      • 2.Rxe5#
    • 1...Sd5
      • 2.Bd6#
  • Tries
    • 1.Sd6+?
      • 1...Kd5
        • 2.Sxb4#
        • 2.Sf4#
      • 1...cxd6!
  • Keys
    • 1.d8Q!
      • threat
        • 2.Sxc5#
      • 1...Rxe5+
        • 2.Rxe5#
      • 1...Sxd3
        • 2.f3#
      • 1...Sxe6
        • 2.f3#
      • 1...Rc3
        • 2.Qxd4#
      • 1...Rc4
        • 2.Bxd4#
      • 1...Rd5
        • 2.Qdh4#
      • 1...Bd5
        • 2.Qdh4#
      • 1...Sd5
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(j);CHECK,N_SPINR(l),OGATE,P_SPINR(j),XB(F)::R1(H),XR(j)
    • S(f);N_PINB(F),N_SPINR(l),P_SPINS(g),SBLOCK::R(H)+B(F)
  • Tries
    • Try
      • S(J);CHECK
      • Refutation
        • P(n);XS(J)
  • Actual
    • P(I);
    • Threat
      • S(C),XR(j)
    • Vars
      • R(j);CHECK,N_SPINR(l),OGATE,P_SPINR(j),XB(F)::R1(H),XR(j)
      • S(f);P_SPINS(g),SBLOCK,XS(C)::P(B)
      • S(g);N_GUARD,P_SPINS(f),XR(H)::P(B)
      • R(j);N_PINB(F),S_CUTB(a)::QAR1(I),XS(g)
      • R(j);N_PINB(F)::R(H)+B(F),XS(g)
      • R(j);N_SPINR(l),SBLOCK::QAR(I)
      • B(e);N_PINB(F),N_SPINR(l),SBLOCK::QAR(I)
      • S(f);N_PINB(F),N_SPINR(l),P_SPINS(g),SBLOCK::R(H)+B(F)
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).