MESON Chess Problem Database

Problem Display
PID: 19270 (8/7p/4K2B/N7/3k4/1R6/4P3/8 w - - 0 1)

Bansac, Pierre

Bulletin Cercle de Boug-la-Reine, 1943

8/7p/4K2B/N7/3k4/1R6/4P3/8

#2

5 + 2

2838 Fun with Chess Miniatures 1996
5454 Near Snap 2013
3713 Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Rb4#
    • 1...Kc5
      • 2.Be3#
  • Tries
    • 1.Sb7?
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc4!
    • 1.Rb1?
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc5
        • 2.Be3#
      • 1...Kc3!
    • 1.Ra3?
      • 1...Ke4
        • 2.Ra4#
      • 1...Kc5!
    • 1.Rc3?
      • threat
        • 2.Rc4#
      • 1...Ke4
        • 2.Rc4#
      • 1...Kxc3!
    • 1.Rg3?
      • 1...Ke4
        • 2.Rg4#
      • 1...Kc5!
    • 1.Rh3?
      • 1...Ke4
        • 2.Rh4#
      • 1...Kc5!
    • 1.Rb4+?
      • 1...Kc5
        • 2.Bf8#
      • 1...Kc3!
    • 1.Rb5?
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc3!
    • 1.Rb6?
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc5
        • 2.Be3#
      • 1...Kc3!
    • 1.Rb7?
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc5
        • 2.Be3#
      • 1...Kc3!
    • 1.Rb8?
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc5
        • 2.Be3#
      • 1...Kc3!
    • 1.e3+?
      • 1...Kc5
        • 2.Bf8#
      • 1...Ke4!
    • 1.e4?
      • 1...Kc5
        • 2.Be3#
      • 1...Kxe4!
  • Keys
    • 1.Rb2!
      • 1...Kc3
        • 2.Bg7#
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc5
        • 2.Be3#

Anticipated by 1953(1859), 4775(1891), 234958(1894), 120937(1898), 57017(1900), 175166(1902), 31183(1902), 181896(1905), 50715(1907), 184830(1908), 189845(1912), 193481(1915), 178324(1915), 75889(1920), 206553(1925), 206593(1925), 231389(1927), 76533(1933), 76553(1936), 101951(1939)

This anticipates 76843(1947), 184308(1950), 51132(1950), 51583(1965), 213018(1967), 121122(1980), 240454(1992)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(B)
    • K(a);S_FLIGHT::B(E)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(A);
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT::B(E)
      • K(a);P-FLIGHT::R(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).