MESON Chess Problem Database

Problem Display
PID: 79736 (nb4BK/B2Q4/4Pp1p/1rp1k3/2R3P1/5r2/1N6/2qn4 w - - 0 1)

Felin, Carlos A

Problem Observer, 2008

nb4BK/B2Q4/4Pp1p/1rp1k3/2R3P1/5r2/1N6/2qn4

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sd3#
    • 1...Rf2
      • 2.Sd3#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rf4
      • 2.Sd3#
    • 1...Rf5
      • 2.Sd3#
    • 1...Se3
      • 2.Sd3#
    • 1...Sb6
      • 2.Bxb8#
  • Tries
    • 1.Bxb8+?
      • 1...Sc7
        • 2.Bxc7#
      • 1...Rxb8!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Qd5#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Bd6
        • 2.Qxd6#
      • 1...f5
        • 2.Qg7#
      • 1...Qc4
        • 2.Sxc4#
      • 1...Sc3
        • 2.Sc4#
      • 1...Se3
        • 2.Sd3#
      • 1...Sb6
        • 2.Bxb8#
      • 1...Sc7
        • 2.Qd6#
      • 1...c4
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::S(A)
    • R(c);N_GUARD::S(A),XR(c)
    • S(b);S_CUTR(c)::S(A)
    • S(i);N_GUARD,S_CUTR(d)::B(E),XB(j)
  • Tries
    • Try
      • B(E);CHECK,XB(j)
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::B(E),XS(i)
      • Refutation
        • R(d);P_PINB(G),XB(E)
  • Actual
    • R(B);
    • Threat
      • QAR1(F)
    • Vars
      • P(e);OGATE,XR(B)::QAB1(F),XP(e)
      • B(j);N_GUARD::QAB1(F),XB(j)
      • P(g);OGATEB::QAB(F)
      • Q(a);N_GUARD::S(A),XQ(a)
      • S(b);S_CUTQ(a)::S(A)
      • S(b);S_CUTR(c)::S(A)
      • S(i);N_GUARD,S_CUTR(d)::B(E),XB(j)
      • S(i);S_CUTB(j)::QAB1(F)
      • P(e);OGATEB::QAR(F),XR(d)
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