MESON Chess Problem Database

Problem Display
PID: 259198 (8/6QK/3p4/R2N1k2/rN3p2/R3np2/2r5/1B6 w - - 0 1)

Pirrone, Santi

1st Prize, Scacco!, 1985

8/6QK/3p4/R2N1k2/rN3p2/R3np2/2r5/1B6

#2

7 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc3#
    • 1...Ke6
      • 2.Sxf4#
  • Tries
    • 1.Sxc2?
      • threat
        • 2.Sd4#
      • 1...Ke4
        • 2.Scxe3#
        • 2.Sf6#
      • 1...Ke6
        • 2.Sc7#
      • 1...Rd4
        • 2.Sxd4#
      • 1...Sxc2!
    • 1.Sxe3+?
      • 1...Ke4
        • 2.Bxc2#
      • 1...Ke6!
    • 1.Bxc2+?
      • 1...Ke6
        • 2.Sxf4#
        • 2.Sc7#
        • 2.Qe7#
      • 1...Sxc2!
    • 1.Rxe3?
      • threat
        • 2.Se7#
        • 2.Bxc2#
        • 2.Qg6#
      • 1...Rxb4
        • 2.Se7#
        • 2.Qg6#
      • 1...Ra2
        • 2.Se7#
        • 2.Qg6#
      • 1...Ra3
        • 2.Se7#
        • 2.Qg6#
      • 1...fxe3!
    • 1.Qf6+?
      • 1...Ke4
        • 2.Sc3#
        • 2.Qxf4#
      • 1...Kg4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qg6#
      • 1...Ke4
        • 2.Sf6#
      • 1...Ke6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(f);N_GUARD,S_CUTP(g),S_CUTR(d),S_CUTS(b),S_FLIGHT::S(E)
    • K(f);N_GUARD,N_SPINR(a),S_CUTP(g),S_CUTR(d),S_CUTS(b),S_FLIGHT::S(E),XP(e)
  • Tries
    • Try
      • S(C);XR(a)
      • Threat
        • B(A)+S(C),DCHECK
      • Vars
        • K(f);N_GUARD,S_CUTP(g),S_CUTR(d),S_CUTS(b),S_FLIGHT::S(E)
        • R(d);::B(A)+S(C),DCHECK,XR(d)
      • Refutation
        • S(b);P_SPINS(b),XS(C)
    • Try
      • S(E);CHECK,XS(b)
      • Vars
        • K(f);N_GUARD,S_FLIGHT::B(A),XR(a)
      • Refutation
        • K(f);N_SPINR(a),S_FLIGHT
    • Try
      • B(A);CHECK,XR(a)
      • Refutation
        • S(b);XB(A)
    • Try
      • R(B);XS(b)
      • Threat
        • DUALS(3)
      • Refutation
        • P(e);XR(B)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(f);N_SPINR(a),S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(F)
    • Vars
      • K(f);N_GUARD,S_CUTP(g),S_CUTR(d),S_CUTS(b),S_FLIGHT::S(E)
      • K(f);N_GUARD,N_SPINR(a),S_CUTP(g),S_CUTR(d),S_CUTS(b),S_FLIGHT::S(E)
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