MESON Chess Problem Database

Problem Display
PID: 118192 (5N2/K2b1R2/p2r4/2PPkp2/1NQ1Bn1R/2pp2n1/5p2/2r2q2 w - - 0 1)

Petkov, Petko Andonov

Canadian Chess Chat, 1981

5N2/K2b1R2/p2r4/2PPkp2/1NQ1Bn1R/2pp2n1/5p2/2r2q2

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sxd7#
    • 1...Rc6
      • 2.Sxd7#
    • 1...Re6
      • 2.Sxd7#
    • 1...Rf6
      • 2.Sxd7#
    • 1...Rg6
      • 2.Sxd7#
    • 1...Rh6
      • 2.Sxd7#
    • 1...Se2
      • 2.Sxd3#
    • 1...Se6
      • 2.Sg6#
  • Tries
    • 1.Sc6+?
      • 1...Rxc6
        • 2.Sxd7#
      • 1...Bxc6!
  • Keys
    • 1.Bxf5!
      • threat
        • 2.Qxf4#
      • 1...Sxd5
        • 2.Qd4#
      • 1...Sge2
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sgh5
        • 2.Qe4#
      • 1...Sfe2
        • 2.Sxd3#
      • 1...Sg2
        • 2.Qd4#
      • 1...Sh3
        • 2.Qd4#
      • 1...Sfh5
        • 2.Qd4#
      • 1...Se6
        • 2.Sg6#
      • 1...Sg6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 6
  • Sets
    • R(k);N_GUARD::S(I),XB(l)
    • S(g);N_GUARD,S_CUTQ(b)::S(A),XP(e)
    • S(g);N_GUARD,S_CUTR(k)::S(I)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(k);XS(A)::S(I),XB(l)
      • Refutation
        • B(l);XS(A)
  • Actual
    • B(C);XP(i)
    • Threat
      • QAB1(B),XS(g)
    • Vars
      • S(g);XP(F)::QAB1(B)
      • S(f);N_GUARD::QAR1(B)
      • S(f);N_GUARD::QAR1(B),XS(f)
      • S(g);N_GUARD,S_CUTQ(b)::S(A),XP(e)
      • S(g);::QAB1(B)
      • S(g);N_GUARD,S_CUTR(k)::S(I)
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