MESON Chess Problem Database

Problem Display
PID: 103690 (4r3/3n3n/5b2/1p1pP1p1/4k1N1/2PpNpPp/2bKP3/Q7 w - - 0 1)

Radovanovic, Slavko

BIT, 2007

4r3/3n3n/5b2/1p1pP1p1/4k1N1/2PpNpPp/2bKP3/Q7

#2

8 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Sf2#
    • 1...Bd1
      • 2.exd3#
    • 1...Bb3
      • 2.exd3#
    • 1...Ba4
      • 2.exd3#
    • 1...Bxe5
      • 2.Sf2#
    • 1...Sxe5
      • 2.Sf2#
    • 1...fxe2
      • 2.Qh1#
    • 1...f2
      • 2.Qh1#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qxf3#
        • 2.exf3#
      • 1...Sxe5
        • 2.Sf2#
      • 1...fxe2
        • 2.Qh1#
        • 2.Qf5#
      • 1...Bd1
        • 2.Qxf3#
        • 2.exd3#
      • 1...f2
        • 2.Qh1#
      • 1...dxe2!
    • 1.Qh1?
      • threat
        • 2.Qxf3#
        • 2.exf3#
      • 1...Sxe5
        • 2.Sf2#
      • 1...Bd1
        • 2.Qxf3#
        • 2.exd3#
      • 1...dxe2!
    • 1.Qa2?
      • threat
        • 2.Qxd5#
      • 1...Rxe5
        • 2.Sf2#
      • 1...Bb3
        • 2.exd3#
      • 1...d4
        • 2.Qd5#
      • 1...Sb6!
    • 1.Qa7?
      • threat
        • 2.Qd4#
      • 1...Bxe5
        • 2.Sf2#
      • 1...Sc5
        • 2.Qxh7#
      • 1...Sb6
        • 2.Qxh7#
      • 1...d4
        • 2.Qxd4#
        • 2.Qb7#
      • 1...fxe2!
  • Keys
    • 1.Qd1!
      • threat
        • 2.exf3#
      • 1...Bxd1
        • 2.exd3#
      • 1...Sxe5
        • 2.Sf2#
      • 1...dxe2
        • 2.Qxc2#
      • 1...fxe2
        • 2.Qh1#
      • 1...f2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(l);SBLOCK,XP(H)::S(G)
    • B(a);N_GUARD::P(C),XP(b)
    • B(i);SBLOCK,XP(H)::S(G)
    • S(j);SBLOCK,XP(H)::S(G)
    • P(c);OGATEB,XP(C)::QAB(A)
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(j);SBLOCK,XP(H)::S(G)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(A);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(j);SBLOCK,XP(H)::S(G)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(g)
      • Vars
        • R(l);SBLOCK,XP(H)::S(G)
        • B(a);N_GUARD::P(C),XP(b)
        • P(g);::QAB1(A)
      • Refutation
        • S(j);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • B(i);SBLOCK,XP(H)::S(G)
        • S(j);OGATE::QAB(A),XS(k)
      • Refutation
        • P(c);XP(C)
  • Actual
    • Q(A);
    • Threat
      • P(C),XP(c)
    • Vars
      • B(a);N_GUARD,XQ(A)::P(C),XP(b)
      • S(j);SBLOCK,XP(H)::S(G)
      • P(b);OGATEB,XP(C)::QAB(A),XB(a)
      • P(c);OGATEB,XP(C)::QAB(A)
      • P(c);OGATEB::QAB(A)
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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).