MESON Chess Problem Database

Problem Display
PID: 18363 (8/8/1K1R4/8/B2n2r1/3bRrb1/N1P5/1N1kn1Q1 w - - 0 1)

Lipton, Michael

1st HM., Israel Ring Ty., 1955

8/8/1K1R4/8/B2n2r1/3bRrb1/N1P5/1N1kn1Q1

#2

8 + 7

5978 Jerusalem Post 1955
3174 The Two-move Chess Problem Tradition and Development 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Rxe1#
      • 2.Qxe1#
    • 1...Be2
      • 2.c3#
      • 2.c4#
    • 1...Ba6
      • 2.c3#
      • 2.c4#
    • 1...Bh2
      • 2.Rxe1#
      • 2.Qxe1#
    • 1...Bf4
      • 2.Rxe1#
      • 2.Qxe1#
    • 1...Be5
      • 2.Rxe1#
      • 2.Qxe1#
    • 1...Bxd6
      • 2.Rxe1#
      • 2.Qxe1#
    • 1...Sxc2
      • 2.Rdxd3#
    • 1...Se2
      • 2.Rdxd3#
      • 2.c4#
    • 1...Sb5
      • 2.Rdxd3#
      • 2.c4#
    • 1...Sf5
      • 2.Rdxd3#
      • 2.c4#
    • 1...Sc6
      • 2.Rdxd3#
      • 2.c4#
    • 1...Se6
      • 2.Rdxd3#
      • 2.c4#
  • Tries
    • 1.Rxd3+?
      • 1...Ke2
        • 2.Sbc3#
        • 2.Sc1#
        • 2.Sac3#
        • 2.Rd2#
      • 1...Rxd3!
    • 1.cxd3+?
      • 1...Sb3
        • 2.Bxb3#
      • 1...Sc2!
    • 1.c3+?
      • 1...Sc2
        • 2.Rdxd3#
      • 1...Sb3
        • 2.Bxb3#
      • 1...Bc2!
    • 1.c4+?
      • 1...Sc2
        • 2.Rdxd3#
      • 1...Sb3
        • 2.Bxb3#
      • 1...Bc2!
  • Keys
    • 1.Re2!
      • threat
        • 2.Sbc3#
        • 2.Rd2#
      • 1...Kxe2
        • 2.Sac3#
      • 1...Bxc2
        • 2.Rd2#
      • 1...Bxe2
        • 2.c3#
      • 1...Sxe2
        • 2.c4#
      • 1...Rf2
        • 2.Sbc3#
        • 2.Rxe1#
        • 2.Qxe1#
      • 1...Bc4
        • 2.Rd2#
      • 1...Be4
        • 2.Rd2#
      • 1...Bb5
        • 2.Rd2#
      • 1...Bf5
        • 2.Rd2#
      • 1...Ba6
        • 2.Rd2#
      • 1...Bg6
        • 2.Rd2#
      • 1...Bh7
        • 2.Rd2#
      • 1...Bf4
        • 2.Sbc3#
        • 2.Rxe1#
        • 2.Qxe1#
      • 1...Sb3
        • 2.Sbc3#
      • 1...Sb5
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 1
  • Sets
    • S(f);OGATE,P_SPINB(c),XP(D)::R(H),XB(c)
  • Tries
    • Try
      • R(E);CHECK,XB(c)
      • Refutation
        • R(d);XR(E)
    • Try
      • P(D);CHECK,XB(c)
      • Vars
        • S(f);N_GUARD::B(F),XS(f)
      • Refutation
        • S(f);
    • Try
      • P(D);CHECK
      • Vars
        • S(f);OGATE,P_SPINB(c)::R(H),XB(c)
        • S(f);N_GUARD,P_SPINB(c)::B(F),XS(f)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • P(D);CHECK
      • Vars
        • S(f);OGATE,P_SPINB(c)::R(H),XB(c)
        • S(f);N_GUARD,P_SPINB(c)::B(F),XS(f)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • R(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);N_SPINS(b),S_FLIGHT,XR(E)::S(C)
      • B(c);P_SPINB(c),XP(D)::R1(E)
      • B(c);N_GUARD,SBLOCK,S_CUTS(f),S_CUTS(f),XR(E)::B(F)+P(D)
      • S(f);N_GUARD,P_SPINB(c),SBLOCK,XR(E)::B(F)+P(D)
      • B(c);::R1(E)
      • S(f);P_SPINB(c)::S(A)
      • S(f);P_SPINB(c)::R1(E)
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).