MESON Chess Problem Database

Problem Display
PID: 144401 (8/6Q1/8/Kp1Prp1P/1P1kp1pR/3pR1P1/1N1p1P2/3B4 w - - 0 1)

Dobbs, Gilbert S

Pittsburgh Leader, 1909

8/6Q1/8/Kp1Prp1P/1P1kp1pR/3pR1P1/1N1p1P2/3B4

#2

11 + 8

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qxe5#
    • 1...Kxd5
      • 2.Qd7#
  • Tries
    • 1.Kxb5?
      • 1...Kc3
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Qd7#
      • 1...f4!
    • 1.Rh1?
      • 1...Kc3
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Qd7#
      • 1...f4!
    • 1.Rh2?
      • 1...Kc3
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Qd7#
      • 1...f4!
    • 1.Qa7+?
      • 1...Kxd5
        • 2.Qd7#
      • 1...Kc3!
    • 1.f3?
      • 1...Kc3
        • 2.Qxe5#
      • 1...Kxe3
        • 2.Qa7#
      • 1...Kxd5
        • 2.Qd7#
      • 1...exf3
        • 2.Qxe5#
      • 1...gxf3
        • 2.Rxd3#
      • 1...f4!
    • 1.h6?
      • 1...Kc3
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Qd7#
      • 1...f4!
  • Keys
    • 1.f4!
      • 1...Kc3
        • 2.Qxe5#
      • 1...Kxe3
        • 2.Qa7#
      • 1...Kxd5
        • 2.Qd7#
      • 1...exf4 ep
        • 2.Qxe5#
      • 1...gxf4 ep
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(b),S_FLIGHT::QAB(K),XR(g)
    • K(c);N_SPINR(g),OGATEB,P-FLIGHT,XP(I)::QAR2(K)
  • Tries
    • Try
      • K(H);P-FLIGHT,P_SPINP(I),XP(f)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAB(K),XR(g)
        • K(c);N_SPINR(g),OGATEB,P-FLIGHT,XP(I)::QAR2(K)
      • Refutation
        • P(h);
    • Try
      • R(G);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAB(K),XR(g)
        • K(c);N_SPINR(g),OGATEB,P-FLIGHT,XP(I)::QAR2(K)
      • Refutation
        • P(h);
    • Try
      • R(G);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAB(K),XR(g)
        • K(c);N_SPINR(g),OGATEB,P-FLIGHT,XP(I)::QAR2(K)
      • Refutation
        • P(h);
    • Try
      • Q(K);CHECK,N_PINR(g)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(I)::QAR2(K)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAB(K),XR(g)
        • K(c);N_SPINR(g),S_FLIGHT,XR(D)::QAB(K)
        • K(c);N_SPINR(g),OGATEB,P-FLIGHT,XP(I)::QAR2(K)
        • P(d);P_SPINP(e),XP(C)::QAB1(K),XR(g)
        • P(e);P_SPINP(d),XP(C)::R1(D),XP(b)
      • Refutation
        • P(h);
    • Try
      • P(J);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAB(K),XR(g)
        • K(c);N_SPINR(g),OGATEB,P-FLIGHT,XP(I)::QAR2(K)
      • Refutation
        • P(h);
  • Actual
    • P(C);
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT::QAB(K),XR(g)
      • K(c);N_SPINR(g),S_FLIGHT,XR(D)::QAB(K)
      • K(c);N_SPINR(g),OGATEB,P-FLIGHT,XP(I)::QAR2(K)
      • P(d);EP,P_SPINP(e),XP(C)::QAB1(K),XR(g)
      • P(e);EP,P_SPINP(d),XP(C)::R1(D),XP(b)
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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).