MESON Chess Problem Database

Problem Display
PID: 109915 (3Rb1B1/3ppn2/1B1p4/K2k4/2N1R1p1/6N1/P4Q2/8 w - - 0 1)

d'avila, DS

Caissa, 1980

3Rb1B1/3ppn2/1B1p4/K2k4/2N1R1p1/6N1/P4Q2/8

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rd4+?
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc6!
    • 1.Rxe7?
      • 1...Kxc4
        • 2.Qd4#
      • 1...Kc6!
    • 1.Qg2?
      • 1...Kc6
        • 2.Re6#
      • 1...e6
        • 2.Rd4#
        • 2.Rf4#
        • 2.Rxg4#
      • 1...e5!
  • Keys
    • 1.Re6!
      • 1...Kxc4
        • 2.Qd4#
      • 1...Kc6
        • 2.Qg2#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Sxd8
        • 2.Rxd6#
      • 1...dxe6
        • 2.Qc5#
      • 1...Se5
        • 2.Rxd6#
      • 1...Sg5
        • 2.Rxd6#
      • 1...Sh6
        • 2.Rxd6#
      • 1...Sh8
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);N_SPINS(f),S_FLIGHT
    • Try
      • R(E);XP(e)
      • Vars
        • K(b);S_FLIGHT,XS(D)::QAR1(B)
      • Refutation
        • K(b);N_SPINS(f),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);N_SPINS(f),S_FLIGHT::QAB(B)+R(E)
      • Refutation
        • P(e);
  • Actual
    • R(E);N_PINS(f)
    • Vars
      • K(b);S_FLIGHT,XS(D)::QAR1(B)
      • K(b);P_SPINP(c),S_FLIGHT::QAB(B)
      • K(b);P_SPINS(f),S_FLIGHT,XR(E)::QAB1(B)
      • S(f);XR(H)::B(I)+R(E),DCHECK,XP(c)
      • P(d);P_SPINP(c),SBLOCK,XR(E)::QAR1(B)
      • S(f);::B(I)+R(E),DCHECK,XP(c)
HTML5 logo

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).