MESON Chess Problem Database

Problem Display
PID: 149010 (4R3/8/8/r7/4n1Np/1pB2Q1b/p1qPB2K/R1nrk3 w - - 0 1)

Guidelli, Giorgio

Good Companions (May), 1918

4R3/8/8/r7/4n1Np/1pB2Q1b/p1qPB2K/R1nrk3

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qxf1#
    • 1...Bxg4
      • 2.Qf1#
    • 1...Sxd2
      • 2.Qf2#
    • 1...Sf2
      • 2.Qxf2#
    • 1...Sg3
      • 2.Qf2#
    • 1...Sc5
      • 2.Qf2#
    • 1...Sg5
      • 2.Qf2#
    • 1...Sd6
      • 2.Qf2#
    • 1...Sf6
      • 2.Qf2#
  • Tries
    • 1.Qh1+?
      • 1...Bf1
        • 2.Qxf1#
      • 1...Kxe2!
  • Keys
    • 1.Bb5!
      • threat
        • 2.Qf2#
      • 1...Rxd2+
        • 2.Qe2#
      • 1...Bxg4
        • 2.Qf1#
      • 1...Se2
        • 2.Qxe2#
      • 1...Sd3
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • B(g);N_GUARD::QAR1(F),XB(g)
    • B(g);N_GUARD,XS(G)::QAR1(F)
    • S(h);N_GUARD,P_SPINS(h),XP(B)::QAB1(F)
    • S(h);N_GUARD::QAB1(F),XS(h)
    • S(h);N_GUARD::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR1(F),XB(g)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(h),XB(C)
  • Actual
    • B(C);P_PINS(h),P_SPINP(B)
    • Threat
      • QAB1(F)
    • Vars
      • R(b);CHECK,N_SPINS(h),P_SPINR(b),P_SPINS(a),XP(B)::QAR1(F)
      • B(g);N_GUARD,XS(G)::QAR1(F)
      • S(a);N_GUARD,N_PINP(B),N_SPINS(h),P_SPINR(b)::QAR1(F),XS(a)
      • S(a);N_GUARD,P_SPINR(b),S_CUTQ(e)::R(H),XS(h)
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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).