MESON Chess Problem Database

Problem Display
PID: 93232 (4n2q/1N4n1/2K1p3/R3BP1r/4k1r1/2Pp4/3P3b/3B1R2 w - - 0 1)

Popov, Georgy Aleksandrov

Arbejder-Skak, 1960

4n2q/1N4n1/2K1p3/R3BP1r/4k1r1/2Pp4/3P3b/3B1R2

#2

9 + 9

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Rf4#
    • 1...Rxf5
      • 2.Re1#
    • 1...Bxe5
      • 2.Sc5#
    • 1...Sxf5
      • 2.Bf3#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sf6
      • 2.Sd6#
    • 1...Sc7
      • 2.Sd6#
    • 1...exf5
      • 2.Bf3#
      • 2.Re1#
  • Keys
    • 1.Bf4!
      • threat
        • 2.Re5#
      • 1...Rxf4
        • 2.Re1#
      • 1...Rxf5
        • 2.Ra4#
      • 1...Bxf4
        • 2.Bf3#
      • 1...Sxf5
        • 2.Sc5#
      • 1...e5
        • 2.Rxe5#

Anticipated by 168255(1956)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD,S_CUTB(a)::R1(B)
    • R(e);SBLOCK,XP(G)::R(B)
    • B(a);SBLOCK,XB(F)::S(I)
    • S(g);SBLOCK,XP(G)::B(A)
    • S(h);N_GUARD::S(I),XS(h)
    • S(h);N_GUARD::S(I)
  • Actual
    • B(F);
    • Threat
      • R1(E)
    • Vars
      • R(d);SBLOCK,XB(F)::R(B)
      • R(e);SBLOCK,XP(G)::R(E)
      • B(a);SBLOCK,XB(F)::B(A)
      • S(g);SBLOCK,XP(G)::S(I)
      • P(f);::R1(E),XP(f)
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Developed and maintained by Brian Stephenson.
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