MESON Chess Problem Database

Problem Display
PID: 231330 (nB6/1B3pN1/5R2/8/1Ppk3r/2p2R1b/4Pn2/K7 w - - 0 1)

Nasimovich, Evgeny Nikolaevich

64 Shakhmatnoe obozrenie, 1927

nB6/1B3pN1/5R2/8/1Ppk3r/2p2R1b/4Pn2/K7

#2

8 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Sf5#
    • 1...Bf1
      • 2.Sf5#
    • 1...Bg2
      • 2.Sf5#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Sd3
      • 2.e3#
    • 1...Sg4
      • 2.Sf5#
      • 2.R6f4#
  • Keys
    • 1.R6f5!
      • threat
        • 2.Be5#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...Re4
        • 2.Rd5#
      • 1...Sd3
        • 2.e3#
      • 1...Sg4
        • 2.R5f4#
      • 1...Sc7
        • 2.Ba7#
      • 1...f6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(f);S_CUTB(c)::S(G)
    • B(c);N_GUARD::S(G)
    • B(c);N_GUARD::S(G),XB(c)
    • S(a);SBLOCK::P(B)
  • Actual
    • R(E);
    • Threat
      • B(H)
    • Vars
      • B(c);XR(E)::S(G),XB(c)
      • R(f);SBLOCK::R1(E)
      • S(a);SBLOCK::P(B)
      • S(a);N_GUARD,S_CUTR(f)::R(E)
      • S(h);N_GUARD::B(H)
      • P(g);N_GUARD::S(G)
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