MESON Chess Problem Database

Problem Display
PID: 262091 (2Q5/4p1K1/2P4p/4kN2/1qR1Pb1R/B1Pn4/8/1B2n3 w - - 0 1)

Somma, Francesco

Schweizerische Schachzeitung, 1928

2Q5/4p1K1/2P4p/4kN2/1qR1Pb1R/B1Pn4/8/1B2n3

#2

10 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sf7#
      • 1...Qxd6
        • 2.Qf5#
      • 1...Qxc4
        • 2.Qf5#
      • 1...exd6
        • 2.Qf5#
        • 2.Qe8#
      • 1...Kxd6!
    • 1.Sxh6?
      • threat
        • 2.Sf7#
      • 1...Kd6
        • 2.Sf7#
      • 1...Qxc4
        • 2.Qf5#
      • 1...Bxh6+!
    • 1.Qc7+?
      • 1...Ke6
        • 2.Sd4#
      • 1...Qd6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Kd6
        • 2.Qb8#
      • 1...Qxc4
        • 2.Qf5#
      • 1...Qd6
        • 2.Qf5#
      • 1...Sc5
        • 2.Qc7#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • Q(c);XS(G)::QAR1(J)
        • Q(c);XR(D)::QAR1(J)
      • Refutation
        • K(e);P_SPINQ(c),S_FLIGHT,XS(G)
    • Try
      • S(G);XP(f)
      • Threat
        • S(G)
      • Vars
        • K(e);P_SPINQ(c),S_FLIGHT::S(G)
        • Q(c);XR(D)::QAR1(J)
      • Refutation
        • B(d);CHECK,XS(G)
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT,S_CUTQ(c)::S(G)
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • S(G);
    • Threat
      • QAR1(J)
    • Vars
      • K(e);P-FLIGHT,P_SPINB(d),P_SPINS(b),XP(E)::QAR2(J)
      • K(e);N_GUARD,P_SPINQ(c),S_FLIGHT::QAB(J)
      • Q(c);XR(D)::QAR1(J)
      • Q(c);::QAR1(J)
      • S(b);S_CUTQ(c)::QAB(J)
      • P(g);::QAR1(J),XP(g)
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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).