MESON Chess Problem Database

Problem Display
PID: 262097 (6R1/1B6/3P3b/K2R1p1q/1p2k3/6p1/8/2BN2N1 w - - 0 1)

Somma, Francesco

Schweizerische Schachzeitung, 1929

6R1/1B6/3P3b/K2R1p1q/1p2k3/6p1/8/2BN2N1

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1
      • 2.Re8#
    • 1...Qe2
      • 2.Re8#
    • 1...Qf3
      • 2.Re8#
    • 1...Qg4
      • 2.Re8#
    • 1...Qe8
      • 2.Rxe8#
    • 1...Qh1
      • 2.Re8#
    • 1...Qh2
      • 2.Re8#
    • 1...Qh3
      • 2.Re8#
    • 1...g2
      • 2.Sf2#
    • 1...b3
      • 2.Sc3#
  • Tries
    • 1.Rd2+?
      • 1...Kf4
        • 2.Re2#
      • 1...Ke5!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rd4#
      • 1...Kxf3
        • 2.Re5#
      • 1...Qxf3
        • 2.Re8#
      • 1...f4
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(e);N_GUARD,XS(B)::R(H)
    • Q(e);N_GUARD::R(H)
    • Q(e);N_GUARD::R(H),XQ(e)
    • P(a);N_GUARD::S(B)
    • P(b);N_GUARD::S(B)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT::B(A)+R(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • B(G)+R(E),DCHECK
    • Vars
      • K(c);N_GUARD,S_FLIGHT,XS(C)::B(G)+R(E)
      • Q(e);N_GUARD,SBLOCK,XS(C)::R(H)
      • P(d);P_PINR(E),SBLOCK,S_CUTB(f)::S(C)
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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).