MESON Chess Problem Database

Problem Display
PID: 268655 (q1n3Q1/p3Nr2/B2p4/b2R2nR/rk6/p1p1N3/P1PP4/6BK w - - 0 1)

Chicco, Adriano

Western Morning News, 1932

q1n3Q1/p3Nr2/B2p4/b2R2nR/rk6/p1p1N3/P1PP4/6BK

#2

11 + 11

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5+
      • 2.S3xd5#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qb8
      • 2.Sc6#
    • 1...Rf3
      • 2.Rb5#
    • 1...Sf3
      • 2.Rb5#
    • 1...Se4
      • 2.Rd4#
      • 2.Rb5#
  • Tries
    • 1.Rh4+?
      • 1...Se4
        • 2.Rxe4#
        • 2.Rb5#
      • 1...Rf4!
    • 1.Qxc8?
      • threat
        • 2.Qxc3#
        • 2.Qc4#
        • 2.dxc3#
      • 1...Qxd5+
        • 2.S3xd5#
        • 2.S7xd5#
      • 1...Qxc8
        • 2.Rb5#
      • 1...cxd2
        • 2.Qc4#
        • 2.c3#
      • 1...Qc6
        • 2.Sxc6#
      • 1...Rf4
        • 2.Qxc3#
        • 2.dxc3#
      • 1...Se4
        • 2.Rd4#
        • 2.Rb5#
        • 2.Qc4#
      • 1...Bc7!
  • Keys
    • 1.Sd1!
      • threat
        • 2.dxc3#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...cxd2
        • 2.c3#
      • 1...Qc6
        • 2.Sxc6#
      • 1...Rf3
        • 2.Rb5#
      • 1...Se4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(j);CHECK,XR(G)::S(F),XQ(j)
    • Q(j);N_GUARD::S(J),XQ(j)
    • Q(j);N_GUARD,N_PINR(G)::S(J)
    • R(i);N_PINR(G)::R1(G)
    • S(f);N_PINR(G)::R1(G)
  • Tries
    • Try
      • R(H);CHECK
      • Refutation
        • R(i);P_SPINR(i)
    • Try
      • Q(K);XS(k)
      • Threat
        • DUALS(3)
      • Vars
        • Q(j);N_PINR(G),XQ(K)::R1(G)
        • Q(j);N_GUARD::S(J),XQ(j)
      • Refutation
        • B(e);
  • Actual
    • S(F);
    • Threat
      • P(E),XP(b)
    • Vars
      • Q(j);CHECK,XR(G)::S(J),XQ(j)
      • P(b);OGATE,XP(E)::P(D)
      • Q(j);N_GUARD::S(J),XQ(j)
      • R(i);N_PINR(G)::R1(G)
      • S(f);N_PINR(G)::R(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).