MESON Chess Problem Database

Problem Display
PID: 257934 (4B3/2p1B3/4kP2/4npp1/K1N3r1/6nq/Qb1R1N2/1r2R3 w - - 0 1)

Eddy, Edwin John

British Chess Magazine, 1934

4B3/2p1B3/4kP2/4npp1/K1N3r1/6nq/Qb1R1N2/1r2R3

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4+
      • 2.Qxc4#
    • 1...Rd4
      • 2.Rxe5#
    • 1...Bc1
      • 2.Rxe5#
    • 1...Ba3
      • 2.Rxe5#
    • 1...Bd4
      • 2.Sb2#
    • 1...f4
      • 2.Sd6#
    • 1...c5
      • 2.Rd6#
    • 1...c6
      • 2.Rd6#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sc5#
      • 1...Rxc4+
        • 2.Qxc4#
      • 1...Kd5
        • 2.Sf4#
      • 1...f4
        • 2.Sd6#
      • 1...Rd4
        • 2.Rxe5#
      • 1...Ba3
        • 2.Rxe5#
      • 1...Bd4
        • 2.Scb2#
      • 1...Se4
        • 2.Scxe5#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(e);CHECK,OGATE,P_SPINR(e),XS(F)::QAB(B),XR(e)
    • R(e);S_CUTB(b)::R1(A),XS(f)
    • B(b);N_GUARD::R1(A),XS(f)
    • B(b);N_PINS(F)::QAB(B)+S(F)
    • P(g);N_PINS(F)::QAB(B)+S(F)
    • P(j);N_GUARD::R1(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(e);CHECK,OGATE,P_SPINR(e),XS(F)::QAB(B),XR(e)
      • K(i);N_SPINS(f),S_FLIGHT::R(C)+S(D),DCHECK
      • P(g);N_PINS(F)::QAB(B)+S(F)
      • R(e);S_CUTB(b)::R1(A),XS(f)
      • B(b);N_GUARD::R1(A),XS(f)
      • B(b);N_PINS(F)::QAB(B)+S(F)
      • S(c);N_PINS(F),N_SPINS(f)::QAB(B)+S(F),XS(f)
      • P(j);::S(D),XP(j)
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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).