MESON Chess Problem Database

Problem Display
PID: 168442 (8/3R1p2/3n1B2/7p/2BNP1bR/3rk1P1/3nP1P1/2Q3KN w - - 0 1)

Petite, Efren

Problemas, 1989

8/3R1p2/3n1B2/7p/2BNP1bR/3rk1P1/3nP1P1/2Q3KN

#2

12 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Re7#
    • 1...Bxe2
      • 2.Sc2#
  • Tries
    • 1.Sc2+?
      • 1...Kxe2
        • 2.Qe1#
      • 1...Kxe4!
  • Keys
    • 1.Sf2!
      • 1...Rxd4
        • 2.Bg5#
      • 1...Bxe2
        • 2.Sc2#
      • 1...Bxd7
        • 2.Sd1#
      • 1...Sxc4
        • 2.Bg5#
      • 1...Sxe4
        • 2.Sd1#
      • 1...Ra3
        • 2.Sc2#
      • 1...Rb3
        • 2.Sc2#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Bf3
        • 2.Sd1#
      • 1...Bh3
        • 2.Sd1#
      • 1...Bf5
        • 2.Sd1#
      • 1...Be6
        • 2.Sd1#
      • 1...Sb5
        • 2.Bg5#
      • 1...Sf5
        • 2.Bg5#
      • 1...Sb7
        • 2.Bg5#
      • 1...Sc8
        • 2.Bg5#
      • 1...Se8
        • 2.Bg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 16
    • REMOVED MATES = 1
  • Sets
    • K(c);N_SPINS(a),OGATEB,P-FLIGHT,P_SPINB(d),XP(I)::R(L)
    • B(d);SBLOCK,XP(D)::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT,P_SPINR(b),XP(D)::QAR1(A)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT,P_SPINB(d),XP(I)
  • Actual
    • S(C);
    • Vars
      • R(b);SBLOCK,XS(H)::B(K)
      • B(d);SBLOCK,XP(D)::S(H)
      • B(d);XR(L)::S(C)
      • S(f);XB(G)::B(K)
      • S(f);SBLOCK,XP(I)::S(C)
      • R(b);::S(H)
      • R(b);OGATEB::QAR2(A),XR(b)
      • B(d);::S(C)
      • S(f);::B(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).