MESON Chess Problem Database

Problem Display
PID: 223174 (4K2b/5p2/5k2/6p1/3PB3/R1p3P1/6Q1/B7 w - - 0 1)

Mackenzie, Arthur Ford

New Orleans Times-Democrat, 1885

4K2b/5p2/5k2/6p1/3PB3/R1p3P1/6Q1/B7

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Ra6#
    • 1...Bg7
      • 2.Ra6#
    • 1...c2
      • 2.d5#
  • Tries
    • 1.Qf1+?
      • 1...Ke6
        • 2.Ra6#
        • 2.Qa6#
      • 1...Kg7!
    • 1.Qh1?
      • threat
        • 2.Qh6#
      • 1...Ke6
        • 2.Ra6#
      • 1...Bg7
        • 2.Ra6#
      • 1...Kg7!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Ra6#
      • 1...Kg7!
    • 1.Qh3?
      • threat
        • 2.Qh6#
      • 1...Bg7
        • 2.Ra6#
        • 2.Qf5#
      • 1...Kg7!
    • 1.Qf2+?
      • 1...Ke6
        • 2.Ra6#
      • 1...Kg7!
    • 1.Qh2?
      • threat
        • 2.Qh6#
      • 1...Ke6
        • 2.Ra6#
      • 1...Bg7
        • 2.Ra6#
      • 1...Kg7!
    • 1.g4?
      • 1...Ke6
        • 2.Ra6#
      • 1...Bg7
        • 2.Ra6#
      • 1...c2
        • 2.d5#
      • 1...Kg7!
  • Keys
    • 1.Qd2!
      • 1...Ke6
        • 2.Ra6#
      • 1...Kg7
        • 2.Qxg5#
      • 1...cxd2
        • 2.d5#
      • 1...Bg7
        • 2.Ra6#
      • 1...c2
        • 2.d5#
      • 1...g4
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::R(C)
    • B(e);SBLOCK::R(C)
    • P(a);::B(A)+P(E)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(c);P-FLIGHT::R(C)
        • B(e);SBLOCK::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(c);P-FLIGHT::R(C)
        • B(e);SBLOCK::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(c);P-FLIGHT::R(C)
        • B(e);SBLOCK::R(C)
        • P(a);::B(A)+P(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);P-FLIGHT::R(C)
      • K(c);S_FLIGHT::QAR2(B),XP(b)
      • P(a);XQ(B)::B(A)+P(E)
      • B(e);SBLOCK::R(C)
      • P(a);::B(A)+P(E)
      • P(b);OGATE::QAR2(B)
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).