MESON Chess Problem Database

Problem Display
PID: 193771 (2n1BnN1/4p2R/2r1k1p1/2pp4/N4BP1/4p3/3p4/3KbQ2 w - - 0 1)

Pasqualini, Giulio

L'Italia Scacchistica, 1916

2n1BnN1/4p2R/2r1k1p1/2pp4/N4BP1/4p3/3p4/3KbQ2

#2

8 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Sxc5#
    • 1...Rb6
      • 2.Sxc5#
    • 1...Rd6
      • 2.Sxc5#
    • 1...Sb6
      • 2.Rxe7#
    • 1...Sd6
      • 2.Rxe7#
    • 1...Sa7
      • 2.Rxe7#
    • 1...Sd7
      • 2.Bf7#
    • 1...e2+
      • 2.Qxe2#
    • 1...d4
      • 2.Qc4#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qxe3#
      • 1...d4
        • 2.Qc4#
      • 1...Sd6
        • 2.Rxe7#
      • 1...Sd7
        • 2.Bf7#
      • 1...Bf2!
    • 1.Qd3?
      • threat
        • 2.Qxe3#
      • 1...e2+
        • 2.Qxe2#
      • 1...d4
        • 2.Qc4#
        • 2.Qe4#
      • 1...Sd6
        • 2.Rxe7#
      • 1...Sd7
        • 2.Bf7#
      • 1...Bf2!
    • 1.Qf3?
      • threat
        • 2.Qxe3#
      • 1...e2+
        • 2.Qxe2#
      • 1...Sd6
        • 2.Rxe7#
      • 1...Sd7
        • 2.Bf7#
      • 1...d4
        • 2.Qe4#
      • 1...Bf2!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Sxc5#
      • 1...e2+
        • 2.Qxe2#
      • 1...d4
        • 2.Qc4#
      • 1...Sb6
        • 2.Rxe7#
      • 1...Sd6
        • 2.Rxe7#
      • 1...Sd7
        • 2.Bf7#
      • 1...c4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(f);N_GUARD::S(C),XP(d)
    • S(j);N_GUARD::R1(F),XP(i)
    • S(k);SBLOCK::B(G)
    • P(c);CHECK,OGATEB::QAR(B),XP(c)
    • P(e);OGATEB::QAB(B)
  • Tries
    • Try
      • Q(B);P_PINP(c)
      • Threat
        • QAR(B),XP(c)
      • Vars
        • P(e);OGATEB::QAB(B)
        • S(j);N_GUARD::R1(F),XP(i)
        • S(k);SBLOCK::B(G)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • QAR(B),XP(c)
      • Vars
        • P(c);CHECK,OGATEB::QAR(B),XP(c)
        • S(j);N_GUARD::R1(F),XP(i)
        • S(k);SBLOCK::B(G)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • QAR(B),XP(c)
      • Vars
        • P(c);CHECK,OGATEB::QAR(B),XP(c)
        • S(j);N_GUARD::R1(F),XP(i)
        • S(k);SBLOCK::B(G)
        • P(e);N_GUARD::QAR2(B)
      • Refutation
        • B(a);
  • Actual
    • Q(B);P_PINR(f)
    • Threat
      • S(C),XP(d)
    • Vars
      • P(c);CHECK,OGATEB::QAR(B),XP(c)
      • P(e);OGATEB::QAB(B)
      • S(j);N_GUARD,N_SPINR(f)::R1(F),XP(i)
      • S(k);SBLOCK::B(G)
      • P(d);::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).