MESON Chess Problem Database

Problem Display
PID: 80678 (4R3/K1p4B/2prN3/5r2/4kP2/N1PRn3/1P2Qb2/2Bn4 w - - 0 1)

Daniel, Arthur William

The Field, 1948

(First published on Sat Apr 17 1948)

4R3/K1p4B/2prN3/5r2/4kP2/N1PRn3/1P2Qb2/2Bn4

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rxe6
      • 2.Rd4#
  • Tries
    • 1.Sxc7+?
      • 1...Re6
        • 2.Rd4#
      • 1...Kxf4!
    • 1.Sg7+?
      • 1...Re6
        • 2.Rd4#
      • 1...Kxf4!
    • 1.Sd8+?
      • 1...Re6
        • 2.Rd4#
      • 1...Kxf4!
    • 1.Sf8+?
      • 1...Re6
        • 2.Rd4#
      • 1...Kxf4!
    • 1.Qf3+?
      • 1...Kxd3
        • 2.Sc5#
        • 2.Bxf5#
      • 1...Kxf3!
    • 1.Qxf2?
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Sc5#
      • 1...Rxd3
        • 2.Sxc7#
      • 1...Rxe6
        • 2.Rd4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...c5
        • 2.Sxc5#
      • 1...Sxf2!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Sc5#
      • 1...Rxd3
        • 2.Sxc7#
      • 1...Rxe6
        • 2.Rd4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD::R1(F),XR(g)
    • R(g);N_GUARD,XS(H)::R1(F)
  • Tries
    • Try
      • S(H);CHECK,XP(h)
      • Vars
        • R(g);::R1(F)
      • Refutation
        • K(d);N_SPINR(e),P-FLIGHT,XP(G)
    • Try
      • S(H);CHECK
      • Vars
        • R(g);::R1(F)
      • Refutation
        • K(d);N_SPINR(e),P-FLIGHT,XP(G)
    • Try
      • S(H);CHECK
      • Vars
        • R(g);::R1(F)
      • Refutation
        • K(d);N_SPINR(e),P-FLIGHT,XP(G)
    • Try
      • S(H);CHECK
      • Vars
        • R(g);::R1(F)
      • Refutation
        • K(d);N_SPINR(e),P-FLIGHT,XP(G)
    • Try
      • Q(C);CHECK,N_PINS(c)
      • Refutation
        • K(d);N_SPINR(e),P_SPINS(c),S_FLIGHT,XQ(C)
    • Try
      • Q(C);N_PINS(c),XB(b)
      • Threat
        • R(K)+S(H),DCHECK
      • Vars
        • K(d);S_FLIGHT,XR(F)::S(H)
        • R(g);N_GUARD,SBLOCK,XR(F)::R(K)+S(H),XP(h)
        • R(g);N_GUARD,XS(H)::R1(F)
        • R(g);N_GUARD::R1(F),XR(g)
        • P(f);::R(K)+S(H),DCHECK,XP(f)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);N_PINS(c)
    • Threat
      • R(K)+S(H),DCHECK
    • Vars
      • K(d);S_FLIGHT,XR(F)::S(H)
      • R(g);N_GUARD,SBLOCK,XR(F)::R(K)+S(H),XP(h)
      • R(g);N_GUARD,XS(H)::R1(F)
      • R(g);N_GUARD::R1(F),XR(g)
      • P(f);::R(K)+S(H),DCHECK,XP(f)
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).