MESON Chess Problem Database

Problem Display
PID: 152555 (B4Q2/BR2p3/4p3/2nPp3/2pk2NR/8/2P5/1K4N1 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1941

B4Q2/BR2p3/4p3/2nPp3/2pk2NR/8/2P5/1K4N1

#2

10 + 6

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Rd7#
    • 1...c3
      • 2.Rb4#
  • Tries
    • 1.Se2+?
      • 1...Kxd5
        • 2.Rd7#
      • 1...Ke4!
    • 1.Qg7?
      • threat
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Rd7#
      • 1...c3
        • 2.Rb4#
      • 1...Kc3!
    • 1.Qf2+?
      • 1...Ke4
        • 2.Se3#
        • 2.Sf6#
      • 1...Kxd5
        • 2.Rd7#
      • 1...Kc3!
    • 1.Qf3?
      • threat
        • 2.Se2#
        • 2.c3#
      • 1...c3
        • 2.Rb4#
        • 2.Qd3#
      • 1...e4!
    • 1.Qf4+?
      • 1...Kc3
        • 2.Se2#
      • 1...Kxd5
        • 2.Rd7#
      • 1...e4
        • 2.Qd2#
        • 2.Qe5#
      • 1...exf4!
    • 1.Qb8?
      • threat
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Rd7#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qe5#
      • 1...Kc3!
    • 1.Qh8?
      • threat
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Rd7#
      • 1...c3
        • 2.Rb4#
      • 1...Kc3!
  • Keys
    • 1.Qh6!
      • 1...Kc3
        • 2.Se2#
      • 1...Ke4
        • 2.Se3#
      • 1...Kxd5
        • 2.Rd7#
      • 1...exd5
        • 2.Qe3#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINS(c),OGATEB,P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
    • P(a);OGATEB,SBLOCK::R(H)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);N_SPINS(c),P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
      • Refutation
        • K(b);N_SPINS(c),P-FLIGHT
    • Try
      • Q(J);P_PINP(d)
      • Threat
        • QAB1(J),XP(d)
      • Vars
        • K(b);N_SPINP(d),N_SPINS(c),P-FLIGHT::QAR1(J),XP(d)
        • K(b);N_SPINP(d),N_SPINS(c),OGATEB,P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
        • P(a);OGATEB,SBLOCK::R(H)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);N_SPINS(c),P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Refutation
        • P(d);
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);N_SPINS(c),S_FLIGHT::S(B)
        • K(b);N_SPINS(c),P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
      • Refutation
        • P(d);XQ(J)
    • Try
      • Q(J);
      • Threat
        • QAB1(J),XP(d)
      • Vars
        • K(b);N_SPINS(c),P-FLIGHT::QAR1(J),XP(d)
        • K(b);N_SPINS(c),OGATEB,P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
        • P(a);OGATEB,SBLOCK::R(H)
        • P(d);::QAB1(J)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
    • Try
      • Q(J);P_PINP(d)
      • Threat
        • QAB1(J),XP(d)
      • Vars
        • K(b);N_SPINP(d),N_SPINS(c),P-FLIGHT::QAR1(J),XP(d)
        • K(b);N_SPINP(d),N_SPINS(c),OGATEB,P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
        • P(a);OGATEB,SBLOCK::R(H)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
  • Actual
    • Q(J);
    • Vars
      • K(b);N_SPINS(c),S_FLIGHT::S(B)
      • K(b);N_SPINS(c),P-FLIGHT::R(E)+S(D)
      • K(b);N_SPINS(c),OGATEB,P-FLIGHT,XP(F)::B(I)+R(H),DCHECK
      • P(e);SBLOCK,XP(F)::QAB1(J)
      • P(a);OGATEB,SBLOCK::R(H)
      • P(d);SBLOCK::QAR2(J)
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).