MESON Chess Problem Database

Problem Display
PID: 276190 (8/3P1p2/2PB2Q1/3KNPn1/R1P1Pkp1/2NP1pp1/4rr2/4R3 w - - 0 1)

Robert, Philippe

2nd HM., Pat a Mat, 2004

8/3P1p2/2PB2Q1/3KNPn1/R1P1Pkp1/2NP1pp1/4rr2/4R3

#2

13 + 8

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qxg5#
    • 1...Ra2
      • 2.Sxf7#
    • 1...Rb2
      • 2.Sxf7#
    • 1...Rc2
      • 2.Sxf7#
    • 1...Rd2
      • 2.Sxf7#
    • 1...Re3
      • 2.Sxf7#
    • 1...Sh3
      • 2.Sxg4#
    • 1...Se6
      • 2.Sxg4#
    • 1...Sh7
      • 2.Sxg4#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sxf7#
      • 1...Sxe4
        • 2.Qxg4#
      • 1...fxg6
        • 2.Sxg6#
        • 2.Sf7#
      • 1...f6
        • 2.Sf7#
      • 1...Rxe4!
    • 1.Qh5?
      • threat
        • 2.Sxg4#
      • 1...Ke3
        • 2.Qxg5#
      • 1...Rxe4
        • 2.Qxg4#
      • 1...Sxe4!
  • Keys
    • 1.c5!
      • threat
        • 2.Sc4#
      • 1...Ke3
        • 2.Qxg5#
      • 1...Rxe4
        • 2.Sxf7#
      • 1...Sxe4
        • 2.Sxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • K(e);N_GUARD,P_SPINR(a),S_FLIGHT::QAB(L),XS(g)
    • R(a);::B(K)+S(H),XP(h)
    • R(a);P_PINP(C)::B(K)+S(H),XP(h)
    • S(g);::B(K)+S(H),XP(f)
  • Tries
    • Try
      • S(B);
      • Threat
        • B(K)+S(H),XP(h)
      • Vars
        • S(g);OGATE,XP(F)::QAR1(L),XP(f)
        • P(h);::B(K)+S(H)
      • Refutation
        • R(a);XP(F)
    • Try
      • Q(L);
      • Threat
        • B(K)+S(H),XP(f)
      • Vars
        • K(e);N_GUARD,P_SPINR(a),S_FLIGHT::QAB(L),XS(g)
        • R(a);XP(F)::QAR1(L),XP(f)
      • Refutation
        • S(g);XP(F)
  • Actual
    • P(E);
    • Threat
      • B(K)+S(H)
    • Vars
      • K(e);N_GUARD,P_SPINR(a),S_FLIGHT::QAB(L),XS(g)
      • R(a);P_SPINR(a),XP(F)::B(K)+S(H),XP(h)
      • S(g);P_SPINS(g),XP(F)::B(K)+S(H),XP(f)
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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).