MESON Chess Problem Database

Problem Display
PID: 204566 (8/2R3b1/KPNkNp1R/p4B2/1pp1P3/r2bp3/1r1Q4/B1q5 w - - 0 1)

Boros, Sandor

Nepszava, 1925

8/2R3b1/KPNkNp1R/p4B2/1pp1P3/r2bp3/1r1Q4/B1q5

#2

10 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qh2#
    • 1...Rbb3
      • 2.Qh2#
    • 1...c3+
      • 2.Qxd3#
  • Tries
    • 1.Scd8?
      • threat
        • 2.Sf7#
      • 1...Ke5
        • 2.Sf7#
        • 2.Qh2#
      • 1...c3+!
    • 1.Sed8?
      • threat
        • 2.Sb7#
      • 1...Kc5
        • 2.Sb7#
      • 1...c3+!
    • 1.Qxe3?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...c3+
        • 2.Qxd3#
      • 1...Bxe4
        • 2.Qc5#
      • 1...Qg1
        • 2.Qf4#
      • 1...Qc3
        • 2.Qc5#
      • 1...Qxe3!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sf7#
      • 1...c3+
        • 2.Sc4#
      • 1...Kxe5
        • 2.Qh2#
      • 1...fxe5
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::QAB(B)
    • P(g);CHECK,N_GUARD,S_CUTR(c)::QAR(B),XB(d)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Refutation
        • P(g);CHECK
    • Try
      • S(H);P_PINP(j)
      • Threat
        • S(H)
      • Vars
        • K(i);N_SPINB(d),N_SPINP(j),S_FLIGHT::S(H)
      • Refutation
        • P(g);CHECK
    • Try
      • Q(B);N_PINB(d),XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);CHECK,N_GUARD,S_CUTR(c)::QAR(B),XB(d)
        • B(d);XP(C)::QAB1(B)
        • Q(a);N_GUARD::QAB(B)
        • Q(a);::QAB1(B)
      • Refutation
        • Q(a);XQ(B)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • P(g);CHECK,S_CUTQ(a)::S(G)
      • K(i);N_SPINB(d),OGATEB,P_SPINR(b),S_FLIGHT,XS(G)::QAB(B)
      • P(j);SBLOCK,XS(G)::R(I)+S(H),XB(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).