MESON Chess Problem Database

Problem Display
PID: 206694 (4R3/B2Nb3/1r6/1P2pp2/4kP2/2P3pN/3PB1K1/8 w - - 0 1)

Michalitschke, Walther

Funkschach, 1925

4R3/B2Nb3/1r6/1P2pp2/4kP2/2P3pN/3PB1K1/8

#2

10 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Rxe5#
    • 1...Bb4
      • 2.Rxe5#
    • 1...Bh4
      • 2.Rxe5#
    • 1...Bc5
      • 2.Rxe5#
    • 1...Bg5
      • 2.Rxe5#
    • 1...Bd6
      • 2.Sf6#
    • 1...Bd8
      • 2.Rxe5#
    • 1...Bf8
      • 2.Rxe5#
  • Tries
    • 1.Sc5+?
      • 1...Bxc5
        • 2.Rxe5#
      • 1...Kd5!
  • Keys
    • 1.Bc4!
      • 1...Rxb5
        • 2.d3#
      • 1...exf4
        • 2.Sg5#
      • 1...Ra6
        • 2.d3#
      • 1...Rc6
        • 2.d3#
      • 1...Rd6
        • 2.Sc5#
      • 1...Re6
        • 2.d3#
      • 1...Rf6
        • 2.d3#
      • 1...Rg6
        • 2.d3#
      • 1...Rh6
        • 2.d3#
      • 1...Rb7
        • 2.d3#
      • 1...Rb8
        • 2.d3#
      • 1...Ba3
        • 2.Rxe5#
      • 1...Bb4
        • 2.Rxe5#
      • 1...Bh4
        • 2.Sc5#
        • 2.Rxe5#
      • 1...Bc5
        • 2.Sxc5#
        • 2.Rxe5#
      • 1...Bg5
        • 2.Sc5#
        • 2.Rxe5#
      • 1...Bd6
        • 2.Sf6#
      • 1...Bf6
        • 2.Sc5#
      • 1...Bd8
        • 2.Sc5#
        • 2.Rxe5#
      • 1...Bf8
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 4
  • Sets
    • B(f);OGATE,P_SPINP(c)::R1(J),XP(c)
    • B(f);N_GUARD,P_SPINP(c),S_CUTR(e)::S(I)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • B(f);OGATE,P_SPINP(c),XS(I)::R1(J),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • R(e);XP(G)::P(A)
      • P(c);P_SPINB(f),SBLOCK,XP(F)::S(E)
      • R(e);::P(A)
      • R(e);S_CUTB(f)::S(I)
      • B(f);OGATE,P_SPINP(c)::R1(J),XP(c)
      • B(f);N_GUARD,P_SPINP(c),S_CUTR(e)::S(I)
      • B(f);N_GUARD,P_SPINP(c)::S(I)
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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).