MESON Chess Problem Database

Problem Display
PID: 188644 (2K2b2/3Qp1q1/2Ppn2N/1p1P3p/R2Pk1bR/4p3/B1P1N1P1/8 w - - 0 1)

Tump, Raymond

To Alain White, 1945

2K2b2/3Qp1q1/2Ppn2N/1p1P3p/R2Pk1bR/4p3/B1P1N1P1/8

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxe6#
    • 1...Qh7
      • 2.Qxe6#
    • 1...Sxd4
      • 2.Qf5#
    • 1...Sf4
      • 2.Sc3#
      • 2.Sg3#
    • 1...Sc5
      • 2.Qf5#
    • 1...Sg5
      • 2.Qf5#
    • 1...Sc7
      • 2.Qf5#
    • 1...Sd8
      • 2.Qf5#
  • Keys
    • 1.Bb1!
      • threat
        • 2.c4#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Qxd4
        • 2.Qxe6#
      • 1...Sxd4
        • 2.Qf5#
      • 1...Sf4
        • 2.Sc3#
      • 1...Sc5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(i);N_GUARD,P_SPINQ(i),XP(F)::QAR2(K),XS(g)
    • Q(i);N_GUARD::QAR2(K),XS(g)
    • S(g);OGATE,P_PINQ(K),P_SPINS(g),XP(F)::QAB1(K)
    • S(g);OGATE,P_PINQ(K)::QAB1(K)
  • Actual
    • B(A);
    • Threat
      • B(A)+P(B)
    • Vars
      • K(b);N_SPINB(c),P_SPINP(f),S_FLIGHT,XP(H)::S(C)
      • Q(i);N_GUARD,P_SPINQ(i),XP(F)::QAR2(K),XS(g)
      • S(g);OGATE,P_PINQ(K),P_SPINS(g),XP(F)::QAB1(K)
      • S(g);N_SPINB(c),P_PINQ(K),SBLOCK::S(C)
      • S(g);OGATE,P_PINQ(K)::QAB1(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).