MESON Chess Problem Database

Problem Display
PID: 231333 (1B6/1pr3p1/b2rn3/7Q/5kNP/3p1p1K/1b2PN2/5n2 w - - 0 1)

Reinfart, AA

64 Shakhmatnoe obozrenie, 1927

1B6/1pr3p1/b2rn3/7Q/5kNP/3p1p1K/1b2PN2/5n2

#2

7 + 11

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qf7#
      • 2.Qe5#
    • 1...Rc3
      • 2.Bxd6#
      • 2.Qf7#
      • 2.Qe5#
    • 1...Bc1
      • 2.Qe5#
    • 1...Ba3
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Sd2
      • 2.e3#
    • 1...Sh2
      • 2.e3#
    • 1...Sg3
      • 2.e3#
    • 1...Sd4
      • 2.Qe5#
      • 2.Qg5#
    • 1...Sc5
      • 2.Qg5#
    • 1...Sg5+
      • 2.Qxg5#
    • 1...Sd8
      • 2.Qg5#
    • 1...Sf8
      • 2.Qg5#
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Sg5+
        • 2.Qxg5#
      • 1...dxe2
        • 2.Qe4#
      • 1...fxe2
        • 2.Qe4#
      • 1...Rc4
        • 2.Sxd3#
        • 2.Qxf3#
      • 1...Sd2
        • 2.e3#
      • 1...Sh2
        • 2.Qe4#
        • 2.e3#
      • 1...Sg3
        • 2.Qxf3#
        • 2.e3#
      • 1...Sd4
        • 2.Qe4#
        • 2.Qe5#
        • 2.Qg5#
      • 1...Sc5
        • 2.Qxf3#
        • 2.Qg5#
      • 1...Rxd5!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...Sg5+
        • 2.Qxg5#
      • 1...Rd4
        • 2.Qf7#
      • 1...Rc4
        • 2.Sxd3#
      • 1...Sd2
        • 2.e3#
      • 1...Sg3
        • 2.e3#
      • 1...Sc5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(b);N_GUARD::QAB1(F)
    • B(b);N_GUARD::QAB1(F),XB(b)
    • S(a);N_GUARD::P(A)
    • S(h);N_GUARD::QAB1(F)
    • S(h);CHECK,N_GUARD::QAB1(F),XS(h)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(h);CHECK,N_GUARD::QAB1(F),XS(h)
        • P(c);XP(A)::QAR1(F)
        • P(d);XP(A)::QAR1(F)
        • S(a);N_GUARD::P(A)
      • Refutation
        • R(g);P_SPINR(j),XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • S(h);CHECK,N_GUARD::QAB1(F),XS(h)
      • R(g);P_SPINR(j),S_CUTB(b)::QAR(F)
      • R(j);P_SPINR(g),S_CUTB(f)::S(B),XP(c)
      • S(a);N_GUARD::P(A)
      • S(h);N_GUARD::QAB1(F)
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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).