MESON Chess Problem Database

Problem Display
PID: 275971 (b3NNq1/p3Pr1p/Q3p2b/1PPk1nnR/1PrB2K1/1B1Rpp1p/4P3/8 w - - 0 1)

Ceriani, Luigi

Western Morning News, 1926

(First published on Sat Jun 26 1926)

b3NNq1/p3Pr1p/Q3p2b/1PPk1nnR/1PrB2K1/1B1Rpp1p/4P3/8

#2

13 + 14

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Sxf6#
    • 1...Rxe7
      • 2.Sf6#
    • 1...Rg7
      • 2.Sf6#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bb7
      • 2.Qxb7#
    • 1...Sg3
      • 2.Qxe6#
    • 1...Sxd4
      • 2.Qxe6#
    • 1...Sh4
      • 2.Qxe6#
    • 1...Sxe7
      • 2.Qxe6#
    • 1...Se4+
      • 2.Bg7#
  • Tries
    • 1.Qd6+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Sxd6!
    • 1.exf3?
      • threat
        • 2.Sc7#
      • 1...Se4+
        • 2.Bg7#
      • 1...Rxe7
        • 2.Sf6#
      • 1...Sxd4
        • 2.Qd6#
        • 2.Qxe6#
      • 1...Sxf3+!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxa8#
      • 1...Se4+
        • 2.Bg7#
      • 1...Ke4
        • 2.Qxa8#
      • 1...Rxe7
        • 2.Sf6#
      • 1...Sxd4
        • 2.Qxe6#
      • 1...Sxe7
        • 2.Qxe6#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sd6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(k);N_GUARD::S(L),XR(k)
    • R(k);N_GUARD,XP(K)::S(L)
    • R(k);N_GUARD::S(L)
    • B(m);N_GUARD::QAB1(J),XB(m)
    • B(m);N_GUARD::QAB(J),XB(m)
    • S(f);P_SPINS(g)::QAB1(J),XP(h)
    • S(f);P_SPINS(f),S_CUTS(g),XB(E)::QAB1(J),XP(h)
    • S(f);P_SPINS(g),XP(K)::QAB1(J),XP(h)
    • S(g);CHECK,N_PINB(E),P_SPINS(f),SBLOCK::R(C)+B(E)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);N_PINB(E),N_SPINR(d),S_FLIGHT::QAR1(J)
      • Refutation
        • S(f);P_SPINS(g),XQ(J)
    • Try
      • P(A);XP(b)
      • Threat
        • S(L)
      • Vars
        • S(g);CHECK,N_PINB(E),P_SPINS(f)::R(C)+B(E)
        • R(k);N_GUARD,XP(K)::S(L)
      • Refutation
        • S(g);CHECK,P_SPINS(f),XP(A)
  • Actual
    • Q(J);
    • Threat
      • QAB(J),XB(m)
    • Vars
      • S(g);CHECK,N_PINB(E),P_SPINS(f),SBLOCK::R(C)+B(E)
      • K(e);N_PINB(E),N_SPINR(d),S_FLIGHT::QAB(J),XB(m)
      • R(k);N_GUARD,XP(K)::S(L)
      • S(f);P_SPINS(f),S_CUTS(g),XB(E)::QAB1(J),XP(h)
      • S(f);P_SPINS(g),XP(K)::QAB1(J),XP(h)
      • B(m);N_GUARD::QAB1(J),XB(m)
      • B(m);N_GUARD::QAB(J),XB(m)
      • S(f);P_SPINS(g)::QAB1(J),XP(h)
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