MESON Chess Problem Database

Problem Display
PID: 262119 (6B1/2Rp4/q3rp2/n1pk1K1p/1b2N3/3bPQ2/1N5B/2rR4 w - - 0 1)

Somma, Francesco

Schweizerische Schachzeitung, 1933

6B1/2Rp4/q3rp2/n1pk1K1p/1b2N3/3bPQ2/1N5B/2rR4

#2

9 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Rxd3#
    • 1...Qc8
      • 2.Rxd3#
    • 1...Qb6
      • 2.Rxd3#
    • 1...Qc6
      • 2.Rxd3#
    • 1...Qd6
      • 2.Rxd3#
    • 1...Qa7
      • 2.Rxd3#
    • 1...Qa8
      • 2.Rxd3#
    • 1...Bc3
      • 2.Rxc5#
    • 1...Sc4
      • 2.Rxd3#
    • 1...Sc6
      • 2.Rxd7#
    • 1...d6
      • 2.Bxe6#
  • Tries
    • 1.Rxd7+?
      • 1...Qd6
        • 2.Rxd6#
      • 1...Kc6!
  • Keys
    • 1.Kg6!
      • threat
        • 2.Qf5#
      • 1...f5+
        • 2.Sf6#
      • 1...Qd6
        • 2.Rxd3#
      • 1...Bc3
        • 2.Rxc5#
      • 1...Sc4
        • 2.Rxd3#
      • 1...Sc6
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(h);N_GUARD::R(A),XB(b)
    • B(c);N_GUARD,S_CUTR(a)::R1(H),XP(e)
    • S(d);S_CUTQ(h)::R(A),XB(b)
    • S(d);SBLOCK,S_CUTQ(h)::R(H),XP(k)
    • P(k);N_GUARD,S_CUTQ(h)::B(I),XR(i)
  • Tries
    • Try
      • R(H);CHECK,XP(k)
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::R1(H),XQ(h)
      • Refutation
        • K(f);N_SPINB(b),N_SPINR(i),S_FLIGHT
  • Actual
    • K(G);S_FLIGHT
    • Threat
      • QAR2(E)
    • Vars
      • P(j);CHECK,N_PINS(F)::QAB(E)+S(F),DCHECK
      • Q(h);N_GUARD::R(A),XB(b)
      • B(c);N_GUARD,S_CUTR(a)::R1(H),XP(e)
      • S(d);S_CUTQ(h)::R(A),XB(b)
      • S(d);SBLOCK,S_CUTQ(h)::R(H),XP(k)
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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).