MESON Chess Problem Database

Problem Display
PID: 71597 (5Bn1/1p1PrR2/R1q3N1/1Pnk4/1Q6/4pPNB/2P5/7K w - - 0 1)

Millour, Rene-Jean

1st HM., Stella Polaris, 1967

5Bn1/1p1PrR2/R1q3N1/1Pnk4/1Q6/4pPNB/2P5/7K

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.d8Q#
    • 1...Re5
      • 2.Sf4#
    • 1...Se6
      • 2.Rf5#
  • Tries
    • 1.Sxe7+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kd6
        • 2.Qf4#
      • 1...Sxe7!
    • 1.c4+?
      • 1...Kd6
        • 2.d8Q#
      • 1...Kd4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qd4#
      • 1...Kd6
        • 2.d8Q#
      • 1...Qf6
        • 2.c4#
      • 1...Re4
        • 2.Sc3#
      • 1...Sb3
        • 2.Sef4#
      • 1...Se6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT,P_PINP(C),P_SPINQ(d),P_SPINR(f),P_SPINS(b)::P=Q
    • R(f);SBLOCK::S(I)
    • S(b);SBLOCK,S_CUTR(f)::R(K)
  • Tries
    • Try
      • S(I);CHECK,XR(f)
      • Vars
        • K(c);P-FLIGHT,P_PINP(C)::QAB1(F)
        • K(c);P-FLIGHT,P_PINP(C),P_SPINQ(d),P_SPINS(b)::QAB(F)
      • Refutation
        • S(g);XS(I)
    • Try
      • P(B);CHECK
      • Vars
        • K(c);P-FLIGHT,P_PINP(C),P_SPINQ(d),P_SPINR(f),P_SPINS(b)::P=Q
      • Refutation
        • K(c);P-FLIGHT,P_PINP(C)
  • Actual
    • S(D);
    • Threat
      • QAR1(F)
    • Vars
      • K(c);P-FLIGHT,P_PINP(C),P_SPINQ(d),P_SPINR(f),P_SPINS(b)::P=Q
      • Q(d);::P(B)
      • R(f);::S(D)
      • S(b);::S(D)
      • S(b);SBLOCK,S_CUTR(f)::R(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).