MESON Chess Problem Database

Problem Display
PID: 267563 (KB6/1prp4/pN1p2R1/Rn2k1b1/5pB1/2PP4/4P3/2Q5 w - - 0 1)

Ceriani, Luigi

L'Italia Scacchistica, 1926

KB6/1prp4/pN1p2R1/Rn2k1b1/5pB1/2PP4/4P3/2Q5

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Qxc3#
    • 1...Rc4
      • 2.Bxd6#
    • 1...f3
      • 2.Qxg5#
    • 1...d5
      • 2.Sxd7#
  • Tries
    • 1.Sxd7+?
      • 1...Kd5
        • 2.Bf3#
      • 1...Rxd7!
    • 1.Rxb5+?
      • 1...Rc5
        • 2.Bxd6#
        • 2.Rxc5#
      • 1...d5
        • 2.Sc4#
        • 2.Sxd7#
        • 2.Rxd5#
      • 1...axb5!
    • 1.Qh1?
      • threat
        • 2.Qe4#
        • 2.Qd5#
        • 2.d4#
      • 1...Rxc3
        • 2.Qe4#
        • 2.Qd5#
      • 1...Rc5
        • 2.Sxd7#
        • 2.Qe4#
      • 1...Rc4
        • 2.Sxc4#
        • 2.Sxd7#
        • 2.Bxd6#
        • 2.Qd5#
      • 1...d5
        • 2.Sxd7#
        • 2.Qxd5#
      • 1...f3!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qd4#
      • 1...Rxc3
        • 2.Bxd6#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rc4
        • 2.Bxd6#
      • 1...d5
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(h);OGATE,P_SPINP(f),XP(C)::QAB(A),XR(h)
    • R(h);OGATE,P_SPINP(f)::B(J),XP(f)
    • P(a);OGATE::QAR2(A),XB(d)
    • P(f);N_SPINS(b),P_SPINR(h),SBLOCK::S(G),XP(i)
  • Tries
    • Try
      • S(G);CHECK,XP(i)
      • Vars
        • K(c);N_GUARD,P-FLIGHT,S_CUTR(h)::B(E)
      • Refutation
        • R(h);P_SPINP(f),XS(G)
    • Try
      • R(F);CHECK,XS(b)
      • Refutation
        • P(e);XR(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(h);OGATE,P_SPINP(f),XP(C)::B(J),XP(f)
      • R(h);N_GUARD,N_SPINS(b),P_SPINP(f)::QAR2(A),XR(h)
      • R(h);OGATE,P_SPINP(f)::B(J),XP(f)
      • P(f);N_SPINS(b),P_SPINR(h),SBLOCK::S(G),XP(i)
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