MESON Chess Problem Database

Problem Display
PID: 179746 (KnQ3b1/1B2P2q/ppN2p2/3k4/P1R4r/B2Ppp2/3R4/3r4 w - - 0 1)

Daniel, Arthur William

3rd Prize, British Chess Magazine 15. (Healey MT) Ty., 1909-1910

KnQ3b1/1B2P2q/ppN2p2/3k4/P1R4r/B2Ppp2/3R4/3r4

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Qxg8#
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qh6
      • 2.Qf5#
      • 2.Qxg8#
    • 1...Qf7
      • 2.Qf5#
    • 1...Qg7
      • 2.Qf5#
    • 1...Qh8
      • 2.Qf5#
    • 1...Rh1
      • 2.Rd4#
    • 1...Rh2
      • 2.Rd4#
    • 1...Rh3
      • 2.Rd4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rh5
      • 2.Rd4#
    • 1...Rh6
      • 2.Rd4#
    • 1...Sd7
      • 2.Qxd7#
  • Tries
    • 1.Sd4+?
      • 1...Ke5
        • 2.Sxf3#
        • 2.Qc7#
        • 2.Qxb8#
      • 1...Sc6!
    • 1.Rc5+?
      • 1...Kd6
        • 2.e8S#
      • 1...bxc5!
    • 1.Qd8+?
      • 1...Sd7
        • 2.Qxd7#
      • 1...Ke6!
    • 1.Qxg8+?
      • 1...Qf7
        • 2.Qxf7#
      • 1...Qxg8!
  • Keys
    • 1.d4!
      • threat
        • 2.Sxb8#
      • 1...Kxc4
        • 2.Sa5#
      • 1...Ke4
        • 2.d5#
      • 1...Qxe7
        • 2.Sxe7#
      • 1...Rxd4
        • 2.Rcxd4#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Sd7
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(i);N_GUARD,P_SPINQ(i),XP(C)::QAB(J),XB(k)
    • Q(i);N_GUARD::QAR2(J),XQ(i)
    • Q(i);N_GUARD::QAR2(J)
    • R(d);N_GUARD::R1(E)
    • R(d);N_GUARD::R1(E),XR(d)
    • S(j);N_GUARD::QAR2(J),XS(j)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • S(j);P_SPINS(j)
    • Try
      • R(E);CHECK
      • Vars
        • K(e);P-FLIGHT::P=S
      • Refutation
        • P(g);XR(E)
    • Try
      • Q(J);CHECK
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::QAR2(J),XS(j)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(J);CHECK,XB(k)
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::QAB(J),XQ(i)
      • Refutation
        • Q(i);XQ(J)
  • Actual
    • P(C);
    • Threat
      • B(G)+S(F),XS(j)
    • Vars
      • K(e);S_FLIGHT,XR(E)::QAR(J)+S(F),DCHECK
      • K(e);OGATE,S_FLIGHT::R(E)+P(C)
      • Q(i);XP(H)::B(G)+S(F),DCHECK,XQ(i)
      • R(d);OGATE,P_SPINR(d),XP(C)::R1(E),XR(d)
      • S(j);OGATE,P_SPINS(j),XS(F)::QAB1(J),XS(j)
      • S(j);N_GUARD::B(G)+S(F)
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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).