MESON Chess Problem Database

Problem Display
PID: 16774 (8/1bK1p1B1/qp2R1p1/2Q3p1/R1r2k2/7P/2B4P/bn2NN2 w - - 0 1)

Gooderson, Arthur R

1st Prize, BCPS 049. Ty., 1943

8/1bK1p1B1/qp2R1p1/2Q3p1/R1r2k2/7P/2B4P/bn2NN2

#2

10 + 10

56 The Problemist 1943
3098 FIDE Album (1914-1944) (I) 1971
3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa4
      • 2.Qe3#
    • 1...Rb4
      • 2.Qe3#
    • 1...Rd4
      • 2.Be5#
      • 2.Qe5#
    • 1...Re4
      • 2.Qf2#
    • 1...Be5+
      • 2.Bxe5#
    • 1...Bf3
      • 2.Sd3#
    • 1...Bc6
      • 2.Qe3#
    • 1...Sc3
      • 2.Be5#
  • Tries
    • 1.Rxc4+?
      • 1...Bd4
        • 2.Be5#
        • 2.Qe5#
      • 1...Be4
        • 2.Rcxe4#
        • 2.Rexe4#
        • 2.Qf2#
      • 1...Qxc4!
    • 1.Re4+?
      • 1...Rxe4
        • 2.Qf2#
      • 1...Bxe4!
    • 1.Qxc4+?
      • 1...Bd4
        • 2.Be5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Qxc4+!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Se2#
      • 1...Be5+
        • 2.Bxe5#
      • 1...Rxa4
        • 2.Qe3#
      • 1...Rb4
        • 2.Qe3#
      • 1...Rd4
        • 2.Qe5#
      • 1...Re4
        • 2.Qf2#
      • 1...Bf3
        • 2.Sd3#
      • 1...Sc3
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(c);N_PINQ(G),N_SPINR(c),XR(F)::QAB1(G)
    • R(c);N_PINQ(G)::QAB1(G)
    • R(c);N_PINQ(G)::QAR2(G)
    • B(a);CHECK,N_GUARD::B(J),XB(a)
    • B(i);SBLOCK::S(A)
    • B(i);N_PINQ(G)::QAB1(G)
    • S(b);S_CUTB(a)::B(J)
  • Tries
    • Try
      • R(F);CHECK,N_SPINQ(G),XR(c)
      • Refutation
        • Q(f);P_PINQ(G),XR(F)
    • Try
      • R(H);CHECK,N_PINR(c)
      • Vars
        • R(c);N_PINQ(G),P_SPINR(c),XR(H)::QAR2(G)
      • Refutation
        • B(i);XR(H)
    • Try
      • Q(G);CHECK,N_SPINQ(G),XR(c)
      • Vars
        • B(a);P_SPINB(a)::B(J)
        • B(i);N_GUARD,P_SPINB(i)::QAR1(G),XB(i)
      • Refutation
        • Q(f);CHECK,P_SPINQ(f),XQ(G)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • B(a);CHECK,N_GUARD::B(J),XB(a)
      • R(c);N_PINQ(G),N_SPINR(c),XR(F)::QAB1(G)
      • R(c);N_PINQ(G)::QAB1(G)
      • R(c);N_PINQ(G)::QAR2(G)
      • B(i);SBLOCK::S(A)
      • S(b);S_CUTB(a)::B(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).