MESON Chess Problem Database

Problem Display
PID: 60940 (4k2r/3p4/p2P3P/1b2NQN1/8/8/5K2/1R4R1 w k - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1946

4k2r/3p4/p2P3P/1b2NQN1/8/8/5K2/1R4R1

#2

8 + 5

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Rb8#
    • 1...Be2
      • 2.Rb8#
    • 1...Bd3
      • 2.Rb8#
    • 1...Ba4
      • 2.Rb8#
    • 1...Bc4
      • 2.Rb8#
    • 1...Bc6
      • 2.Rb8#
  • Tries
    • 1.Se6?
      • threat
        • 2.Qg6#
        • 2.Qh5#
        • 2.Qf7#
      • 1...Rxh6
        • 2.Rg8#
        • 2.Qf7#
        • 2.Qf8#
      • 1...Rf8
        • 2.Qxf8#
      • 1...Rh7
        • 2.Rg8#
        • 2.Qf8#
      • 1...Rg8
        • 2.Rxg8#
        • 2.Qf7#
      • 1...Be2
        • 2.Rb8#
        • 2.Qg6#
        • 2.Qf7#
      • 1...Bd3
        • 2.Rb8#
        • 2.Qf7#
      • 1...dxe6!
    • 1.Rxb5?
      • threat
        • 2.Rb8#
      • 1...Kd8
        • 2.Rb8#
        • 2.Qxd7#
      • 1...axb5!
    • 1.Rgc1?
      • threat
        • 2.Rc8#
      • 1...Bc4
        • 2.Rb8#
      • 1...Bc6
        • 2.Rb8#
      • 1...Kd8!
    • 1.Qg6+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kd8!
    • 1.Qxd7+?
      • 1...Kf8
        • 2.Se6#
        • 2.Qf7#
      • 1...Bxd7!
    • 1.Qf3?
      • threat
        • 2.Qa8#
      • 1...Kd8
        • 2.Qa8#
      • 1...Bc6
        • 2.Rb8#
      • 1...Rf8!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qa8#
      • 1...Rf8+
        • 2.Sef7#
      • 1...0-0+
        • 2.Sgf7#
      • 1...Kd8
        • 2.Qa8#
      • 1...Kf8
        • 2.Qa8#
      • 1...Bc6
        • 2.Rb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(a);OGATE::R(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(e);N_GUARD,P_PINQ(E)::QAR1(E),XR(e)
      • Refutation
        • P(c);XS(F)
    • Try
      • R(A);XB(a)
      • Threat
        • R(A)
      • Refutation
        • P(b);XR(A)
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • B(a);OGATE::R(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(E)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(E);CHECK,XP(c)
      • Refutation
        • B(a);XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR(E)
      • Vars
        • K(d);P-FLIGHT::QAR(E)
        • B(a);OGATE::R(A)
      • Refutation
        • R(e);P_PINQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAR(E)
    • Vars
      • R(e);CHECK,SBLOCK::QAR(E)+S(D)
      • K(d);0-0,CHECK::R(B)+S(F)
      • K(d);P-FLIGHT::QAR(E)
      • B(a);OGATE::R(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).