MESON Chess Problem Database

Problem Display
PID: 88104 (3K4/p3R3/5k2/r2p4/r3nB1N/2N1R3/8/8 w - - 0 1)

Stocchi, Ottavio

Polski Zwiazek Problemistow, 1950

3K4/p3R3/5k2/r2p4/r3nB1N/2N1R3/8/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Sxd5#
    • 1...Sd2
      • 2.R3e6#
    • 1...Sf2
      • 2.R3e6#
    • 1...Sxc3
      • 2.R3e6#
    • 1...Sg3
      • 2.R3e6#
    • 1...Sc5
      • 2.Sxd5#
    • 1...Sg5
      • 2.Be5#
    • 1...Sd6
      • 2.R3e6#
    • 1...d4
      • 2.Sxe4#
  • Tries
    • 1.Rg3?
      • threat
        • 2.Be5#
        • 2.Rg6#
      • 1...Sg5
        • 2.Be5#
        • 2.Bxg5#
      • 1...d4
        • 2.Sxe4#
        • 2.Rg6#
      • 1...Sxg3!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Rf3#
      • 1...Sxc3
        • 2.R3e6#
      • 1...Sd2
        • 2.R3e6#
      • 1...Sf2
        • 2.R3e6#
      • 1...Sg3
        • 2.R3e6#
      • 1...Sc5
        • 2.Sxd5#
      • 1...Sg5
        • 2.Bg7#
      • 1...Sd6
        • 2.R3e6#
      • 1...d4
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::S(A),XP(d)
    • S(b);OGATE::R1(B)
    • S(b);OGATE,XS(A)::R1(B)
    • S(b);S_CUTR(c)::S(A),XP(d)
    • S(b);SBLOCK::B(C)
    • P(d);N_GUARD,S_CUTR(a)::S(A),XS(b)
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);XR(B)
  • Actual
    • B(C);
    • Threat
      • R(B)
    • Vars
      • S(b);OGATE,XS(A)::R1(B)
      • S(b);OGATE::R1(B)
      • S(b);S_CUTR(c)::S(A),XP(d)
      • S(b);SBLOCK::B(C)
      • P(d);N_GUARD,S_CUTR(a)::S(A),XS(b)
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