MESON Chess Problem Database

Problem Display
PID: 135382 (5R2/4KN2/5p2/1R1p2p1/4k1pP/3p2P1/3Q3N/8 w - - 0 1)

Watson, George

The Field, 1915

(First published on Sat Jul 24 1915)

5R2/4KN2/5p2/1R1p2p1/4k1pP/3p2P1/3Q3N/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxd3#
    • 1...d4
      • 2.Sd6#
      • 2.Qe1#
    • 1...gxh4
      • 2.Qf4#
  • Tries
    • 1.Kd6?
      • 1...Kd4
        • 2.Rb4#
      • 1...Kf5
        • 2.Qxd3#
      • 1...gxh4
        • 2.Qf4#
      • 1...d4
        • 2.Re8#
        • 2.Qe1#
      • 1...f5!
    • 1.Kxf6?
      • 1...gxh4
        • 2.Qf4#
      • 1...d4
        • 2.Sxg5#
        • 2.Sd6#
        • 2.Re5#
        • 2.Re8#
        • 2.Qe1#
      • 1...Kd4!
    • 1.Sd6+?
      • 1...Ke5
        • 2.Qc3#
        • 2.Qe3#
        • 2.Qb2#
      • 1...Kd4!
    • 1.Rb4+?
      • 1...Kf5
        • 2.Qxd3#
      • 1...d4!
    • 1.Ra8?
      • 1...Kd4
        • 2.Ra4#
      • 1...Kf5
        • 2.Qxd3#
      • 1...gxh4
        • 2.Qf4#
      • 1...d4
        • 2.Sd6#
        • 2.Qe1#
      • 1...f5!
    • 1.Rc8?
      • 1...Kd4
        • 2.Rb4#
      • 1...Kf5
        • 2.Qxd3#
      • 1...gxh4
        • 2.Qf4#
      • 1...d4
        • 2.Sd6#
        • 2.Qe1#
      • 1...f5!
    • 1.Qe3+?
      • 1...Kf5
        • 2.Qxd3#
      • 1...Kxe3!
  • Keys
    • 1.Sf1!
      • 1...Kf3
        • 2.Sxg5#
      • 1...Kd4
        • 2.Qb4#
      • 1...Kf5
        • 2.Qxd3#
      • 1...gxh4
        • 2.Qf4#
      • 1...f5
        • 2.Qe3#
      • 1...d4
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(d),S_FLIGHT::QAB(A),XP(a)
    • P(e);N_GUARD,XP(D)::QAR1(A)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::R(E)
        • K(b);P_SPINP(d),S_FLIGHT::QAB(A),XP(a)
        • P(e);N_GUARD,XP(D)::QAR1(A)
      • Refutation
        • P(f);
    • Try
      • K(F);S_FLIGHT,XP(f)
      • Vars
        • P(e);N_GUARD,XP(D)::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • S(G);CHECK
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(A),XP(a)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • R(H);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::R(H)
        • K(b);P_SPINP(d),S_FLIGHT::QAB(A),XP(a)
        • P(e);N_GUARD,XP(D)::QAR1(A)
      • Refutation
        • P(f);
    • Try
      • R(H);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::R(E)
        • K(b);P_SPINP(d),S_FLIGHT::QAB(A),XP(a)
        • P(e);N_GUARD,XP(D)::QAR1(A)
      • Refutation
        • P(f);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P_SPINP(d),S_FLIGHT::QAB(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::S(G),XP(e)
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(A)
      • K(b);P_SPINP(d),S_FLIGHT::QAB(A),XP(a)
      • P(e);N_GUARD,XP(D)::QAR1(A)
      • P(f);SBLOCK::QAR1(A)
      • P(d);SBLOCK::QAB(A)
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).