MESON Chess Problem Database

Problem Display
PID: 163058 (8/B4pK1/3P1P2/1p5P/pNk1N1pQ/P2p4/Pn1P3b/R4r2 w - - 0 1)

Sardella, Giuseppe

Best Problems, 2012

8/B4pK1/3P1P2/1p5P/pNk1N1pQ/P2p4/Pn1P3b/R4r2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Rxc1#
    • 1...Rf2
      • 2.Rc1#
    • 1...Rf3
      • 2.Rc1#
    • 1...Rf4
      • 2.Rc1#
    • 1...Rf5
      • 2.Rc1#
    • 1...Rxf6
      • 2.Rc1#
    • 1...Bxd6
      • 2.Sxd6#
    • 1...g3
      • 2.Sf2#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...Rxf2
        • 2.Rc1#
      • 1...Bxd6
        • 2.Sxd6#
        • 2.Qd4#
      • 1...Be5
        • 2.Qc5#
      • 1...Bg1!
    • 1.Qg5?
      • threat
        • 2.Qc5#
        • 2.Qd5#
      • 1...Bxd6
        • 2.Sxd6#
        • 2.Qd5#
      • 1...Rf5
        • 2.Rc1#
      • 1...Bg1
        • 2.Qd5#
      • 1...Be5!
  • Keys
    • 1.Qxg4!
      • threat
        • 2.Qc8#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Rg1
        • 2.Sg3#
      • 1...Rf5
        • 2.Rc1#
      • 1...Bg1
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::R(A),XR(a)
    • R(a);N_GUARD::R(A)
    • R(a);N_GUARD,XP(J)::R(A)
    • B(c);XP(I)::S(F),XB(c)
    • P(g);::QAR(G)+S(F)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_GUARD,XQ(G)::R(A)
        • B(c);P_PINP(J)::QAR1(G)
      • Refutation
        • B(c);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_GUARD::R(A)
        • B(c);::QAB1(G)
      • Refutation
        • B(c);P_PINP(J)
  • Actual
    • Q(G);XP(g)
    • Threat
      • QAR(G)
    • Vars
      • B(c);XP(I)::QAR(G)+S(F),DCHECK,XB(c)
      • R(a);N_GUARD,P_PINQ(G)::QAR(G)+S(F)
      • R(a);N_GUARD::R(A)
      • B(c);N_GUARD::QAR(G)+S(F)
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