MESON Chess Problem Database

Problem Display
PID: 184069 (8/3R2K1/b2P4/Rn1pk3/1p2p1B1/2n5/3Q1N2/B7 w - - 0 1)

Monreal, Pierre

Bulletin Ouvrier des Echecs, 1955

8/3R2K1/b2P4/Rn1pk3/1p2p1B1/2n5/3Q1N2/B7

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Rxd5#
    • 1...Sxd6
      • 2.Rxd5#
      • 2.Re7#
    • 1...Sa7
      • 2.Rxd5#
    • 1...e3
      • 2.Qxe3#
    • 1...d4
      • 2.Qg5#
  • Tries
    • 1.Sd3+?
      • 1...exd3
        • 2.Qe3#
      • 1...Kd4!
    • 1.Qh6?
      • threat
        • 2.Qf6#
      • 1...d4
        • 2.Qg5#
      • 1...Kd4!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Sd3#
      • 1...Sxd6
        • 2.Re7#
      • 1...d4
        • 2.Qg5#
      • 1...Sa3
        • 2.Qxe4#
      • 1...Sd4
        • 2.Qg3#
      • 1...Sa7
        • 2.Qxe4#
      • 1...Sc7
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(d);OGATE,P_SPINP(e)::R1(E),XP(e)
    • P(c);OGATEB::QAR2(B),XP(c)
    • P(e);N_SPINS(a),P_SPINS(d),SBLOCK::QAR2(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(c);XS(C)::QAR2(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(e);N_SPINS(a),P_SPINS(d),SBLOCK::QAR2(B)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(B);P_PINP(c)
    • Threat
      • S(C)
    • Vars
      • S(d);SBLOCK,XP(F)::R(G)
      • P(e);N_SPINS(a),P_SPINS(d),SBLOCK::QAR2(B)
      • S(d);S_CUTP(e)::QAR1(B),XP(c)
      • S(d);N_SPINS(a),SBLOCK::QAB(B)
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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).