MESON Chess Problem Database

Problem Display
PID: 153540 (B5n1/1q3NK1/2k1p1Np/Pp2Bp1P/1P1R1P2/2b4b/n1R3r1/7Q w - - 0 1)

Henriksen, Thorleif Cammillo

Good Companions (March), 1916

B5n1/1q3NK1/2k1p1Np/Pp2Bp1P/1P1R1P2/2b4b/n1R3r1/7Q

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Rxc3#
    • 1...Sxb4
      • 2.Rxc3#
    • 1...Se7
      • 2.Sd8#
  • Tries
    • 1.Kf8?
      • threat
        • 2.Sd8#
      • 1...Sxb4
        • 2.Rxc3#
      • 1...Qxa8+!
    • 1.Kxg8?
      • threat
        • 2.Sd8#
      • 1...Sxb4
        • 2.Rxc3#
      • 1...Qxa8+!
    • 1.Kh8?
      • threat
        • 2.Sd8#
      • 1...Sxb4
        • 2.Rxc3#
      • 1...Qxa8!
  • Keys
    • 1.Bb8!
      • 1...Qxa8
        • 2.Sd8#
      • 1...Sxb4
        • 2.Rxc3#
      • 1...Bg4
        • 2.Se5#
      • 1...Sc1
        • 2.Rxc3#
      • 1...Sf6
        • 2.Rd6#
      • 1...Se7
        • 2.Se5#
        • 2.Sd8#
      • 1...e5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::R(B),XB(c)
    • S(a);N_GUARD,XP(C)::R(B),XB(c)
    • S(k);::S(J)
  • Tries
    • Try
      • K(K);N_SPINS(I),S_FLIGHT
      • Threat
        • S(J)
      • Vars
        • S(a);N_GUARD,XP(C)::R(B),XB(c)
      • Refutation
        • Q(j);CHECK,N_SPINQ(j),XB(L)
    • Try
      • K(K);P-FLIGHT,XS(k)
      • Threat
        • S(J)
      • Vars
        • S(a);N_GUARD,XP(C)::R(B),XB(c)
      • Refutation
        • Q(j);CHECK,N_SPINQ(j),XB(L)
    • Try
      • K(K);N_SPINS(I),S_FLIGHT
      • Threat
        • S(J)
      • Vars
        • S(a);N_GUARD,XP(C)::R(B),XB(c)
      • Refutation
        • Q(j);N_SPINQ(j),XB(L)
  • Actual
    • B(G);P_SPINR(D)
    • Vars
      • Q(j);N_SPINQ(j),XB(L)::S(J)
      • S(a);N_GUARD,XP(C)::R(B),XB(c)
      • B(d);N_PINS(I),P_PINS(J)::S(I)
      • S(a);N_GUARD::R(B),XB(c)
      • S(k);N_PINR(D)::R1(D)
      • P(h);N_PINR(D)::R1(D)
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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).