MESON Chess Problem Database

Problem Display
PID: 198760 (2B4B/pR1r1b1N/4n1pq/2p2k1p/K1p2r1P/1pb2R2/5NP1/5Q2 w - - 0 1)

Pasqualini, Giulio

L'Italia Scacchistica, 1921

2B4B/pR1r1b1N/4n1pq/2p2k1p/K1p2r1P/1pb2R2/5NP1/5Q2

#2

10 + 13

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxf7#
    • 1...Rxb7
      • 2.Qb1#
    • 1...Rc7
      • 2.Qb1#
    • 1...Re7
      • 2.Qb1#
    • 1...Bd4
      • 2.Qb1#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qe4#
      • 1...Rd4
        • 2.Rxf7#
        • 2.Qe5#
      • 1...Sg5!
  • Keys
    • 1.Qxc4!
      • threat
        • 2.Qe4#
      • 1...Rd4
        • 2.Rxf7#
      • 1...Bd4
        • 2.Qd3#
      • 1...Sd4
        • 2.Qxf7#
      • 1...Sg5
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(l);OGATE,P_SPINS(h)::R(G),XB(m)
    • R(l);N_GUARD,P_SPINS(h),XR(G)::QAB(A)
    • R(l);N_GUARD,P_SPINS(h)::QAB(A)
    • B(b);S_CUTR(l)::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • S(h);
  • Actual
    • Q(A);P_SPINQ(A),XP(c)
    • Threat
      • QAB1(A)
    • Vars
      • R(l);OGATE,P_SPINS(h)::R(G),XB(m)
      • B(b);N_PINQ(A)::QAB(A)
      • S(h);N_PINQ(A)::QAR2(A),XB(m)
      • S(h);N_GUARD,S_CUTQ(j)::R1(D),XR(d)
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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).