MESON Chess Problem Database

Problem Display
PID: 274292 (8/3PR3/B1K5/B1pp3b/pp1kP3/4p1n1/6p1/1NN3Q1 w - - 0 1)

Zaragoza, Luis

BCPS Website, 2024

8/3PR3/B1K5/B1pp3b/pp1kP3/4p1n1/6p1/1NN3Q1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxd1#
    • 1...Bg6
      • 2.Qd1#
    • 1...Bf7
      • 2.Qd1#
    • 1...Be8
      • 2.Qd1#
    • 1...Se2
      • 2.Qd1#
    • 1...a3
      • 2.Sb3#
    • 1...b3
      • 2.Bc3#
    • 1...c4
      • 2.Bb6#
    • 1...dxe4
      • 2.d8Q#
      • 2.d8R#
  • Tries
    • 1.Se2+?
      • 1...Sxe2
        • 2.Qd1#
      • 1...Bxe2!
    • 1.d8Q?
      • threat
        • 2.Qxd5#
        • 2.Qh8#
      • 1...Sxe4
        • 2.Qxd5#
      • 1...Bf7
        • 2.Qd1#
        • 2.Qh8#
      • 1...Sf5
        • 2.Qxd5#
      • 1...Be8+!
    • 1.d8R?
      • threat
        • 2.Rxd5#
      • 1...Bf7
        • 2.Qd1#
      • 1...Be8+!
  • Keys
    • 1.Qh2!
      • 1...Sxe4
        • 2.Qe5#
      • 1...dxe4
        • 2.d8Q#
        • 2.d8R#
      • 1...e2
        • 2.Qg1#
      • 1...g1Q
        • 2.Qb2#
      • 1...g1S
        • 2.Qb2#
      • 1...g1B
        • 2.Qb2#
      • 1...g1R
        • 2.Qb2#
      • 1...Be2
        • 2.Qh8#
      • 1...Bd1
        • 2.Qh8#
      • 1...Bf3
        • 2.Qh8#
      • 1...Bg4
        • 2.Qh8#
      • 1...Bg6
        • 2.Qh8#
      • 1...Bf7
        • 2.Qh8#
      • 1...Be8
        • 2.Qh8#
      • 1...Sf1
        • 2.Qe5#
      • 1...Sh1
        • 2.Qe5#
      • 1...Se2
        • 2.Qe5#
      • 1...Sf5
        • 2.Qe5#
      • 1...a3
        • 2.Sb3#
      • 1...b3
        • 2.Bc3#
      • 1...c4
        • 2.Bb6#

This is a version of 274291

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • B(i);N_GUARD::QAR(C),XB(i)
    • B(i);N_GUARD::QAR(C)
    • B(i);N_GUARD,P_PINP(H)::QAR(C)
    • S(c);S_CUTB(i)::QAR(C)
    • P(d);N_GUARD::S(B)
    • P(e);OGATE::B(E)
    • P(g);OGATEB::B(E)
    • P(h);XP(D)::P=Q
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • S(c);XS(B)::QAR(C)
      • Refutation
        • B(i);XS(B)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(D)::QAR1(H),XP(h)
        • S(c);::QAR1(H),XP(h)
      • Refutation
        • B(i);CHECK
    • Try
      • P(H);
      • Threat
        • R1(H),XP(h)
      • Vars
        • B(i);N_GUARD::QAR(C)
      • Refutation
        • B(i);CHECK
  • Actual
    • Q(C);N_PINP(b)
    • Vars
      • S(c);OGATE,XP(D)::QAB1(C)
      • P(h);XP(D)::P=Q
      • P(b);OGATEB::QAB(C)
      • P(a);OGATE::QAB(C)
      • B(i);OGATE::QAB(C)
      • B(i);OGATE,P_PINP(H)::QAB(C)
      • S(c);OGATE::QAB1(C)
      • P(d);N_GUARD::S(B)
      • P(e);OGATE::B(E)
      • P(g);OGATEB::B(E)
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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).