MESON Chess Problem Database

Problem Display
PID: 179459 (6B1/8/1N2R3/3R4/1p1Pn3/pk3rrQ/p1p1N3/Kb6 w - - 0 1)

Davidenko, Fedor Vasilevich

5th HM., Hlas l'udu, 1977

6B1/8/1N2R3/3R4/1p1Pn3/pk3rrQ/p1p1N3/Kb6

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Sc1#
    • 1...Sc3
      • 2.Sc1#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Sc1#
      • 1...c1Q
        • 2.Sxc1#
      • 1...c1S
        • 2.Sxc1#
      • 1...c1B
        • 2.Sxc1#
      • 1...c1R
        • 2.Sxc1#
      • 1...Rf1
        • 2.Rf5#
      • 1...Rg1
        • 2.Rg5#
      • 1...Sc5!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Sc1#
      • 1...Sxc5
        • 2.Re3#
      • 1...c1Q
        • 2.Sxc1#
      • 1...c1S
        • 2.Sxc1#
      • 1...c1B
        • 2.Sxc1#
      • 1...c1R
        • 2.Sxc1#
      • 1...Rf1
        • 2.Rf6#
      • 1...Rg1
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • R(f);SBLOCK::S(B)
    • S(i);SBLOCK::S(B)
  • Tries
    • Try
      • R(G);
      • Threat
        • S(B)
      • Vars
        • P(c);::S(B),XQ(c)
        • P(c);::S(B),XS(c)
        • P(c);::S(B),XB(c)
        • P(c);::S(B),XR(c)
        • R(f);P_SPINR(g)::B(H)+R(E)
        • R(g);P_SPINR(f)::B(H)+R(E)
      • Refutation
        • S(i);
  • Actual
    • R(E);
    • Threat
      • S(B)
    • Vars
      • S(i);OGATE,XR(E)::B(H)+R(G),DCHECK
      • P(c);::S(B),XQ(c)
      • P(c);::S(B),XS(c)
      • P(c);::S(B),XB(c)
      • P(c);::S(B),XR(c)
      • R(f);P_SPINR(g)::B(H)+R(G)
      • R(g);P_SPINR(f)::B(H)+R(G)
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