MESON Chess Problem Database

Problem Display
PID: 96384 (6q1/3p1Qb1/3N3r/n7/K3Nr1p/3Rpk2/6R1/7B w - - 0 1)

Eddy, Edwin John

The Chess Problem, 1944

6q1/3p1Qb1/3N3r/n7/K3Nr1p/3Rpk2/6R1/7B

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qxf5#
    • 1...Bd4
      • 2.Sd2#
    • 1...Sc4
      • 2.Sg5#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Rf1#
      • 1...e2
        • 2.Rd3#
        • 2.Rg3#
      • 1...Rxd6!
    • 1.Qh5+?
      • 1...Rg4
        • 2.Rf2#
        • 2.Qxg4#
      • 1...Rxh5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rxe3#
      • 1...Rxe4+
        • 2.Sd4#
      • 1...Kxe4
        • 2.Rxe3#
      • 1...Rxf5
        • 2.Qxf5#
      • 1...Rg4
        • 2.Rf2#
      • 1...Bd4
        • 2.Sd2#
      • 1...Sc4
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);N_PINS(E),OGATEB::QAR2(G),XR(c)
    • B(h);N_PINS(E)::S(E)
    • S(e);N_PINS(E)::S(E)
  • Tries
    • Try
      • R(C);N_PINP(a)
      • Threat
        • R(C)
      • Refutation
        • R(f);XS(F)
    • Try
      • Q(G);CHECK,N_PINR(c)
      • Refutation
        • R(f);XQ(G)
  • Actual
    • S(F);N_PINR(c)
    • Threat
      • R1(C),XP(a)
    • Vars
      • R(c);CHECK,SBLOCK,XS(E)::QAR(G)+S(F),DCHECK
      • K(b);N_SPINP(a),S_FLIGHT,XS(E)::R1(C),XP(a)
      • R(c);N_PINS(E),OGATE,P_SPINR(c),XS(F)::QAR2(G),XR(c)
      • R(c);SBLOCK::B(A)+R(B),DCHECK
      • B(h);N_PINS(E)::S(E)
      • S(e);N_PINS(E)::S(E)
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).