MESON Chess Problem Database

Problem Display
PID: 267495 (3rb3/R4PK1/2kp2R1/P2nQp2/P3nr2/1NbN4/6B1/4q3 w - - 0 1)

Ceriani, Luigi

Grantham Journal, 1927

3rb3/R4PK1/2kp2R1/P2nQp2/P3nr2/1NbN4/6B1/4q3

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sd4#
    • 1...Bb4
      • 2.Sd4#
    • 1...Bd4
      • 2.Sxd4#
    • 1...Bxe5+
      • 2.Sxe5#
    • 1...Sd2
      • 2.Bxd5#
    • 1...Sf2
      • 2.Bxd5#
    • 1...Sg3
      • 2.Bxd5#
    • 1...Sc5
      • 2.Bxd5#
    • 1...Sg5
      • 2.Bxd5#
    • 1...Sf6
      • 2.Qb5#
  • Tries
    • 1.Rxd6+?
      • 1...Sxd6
        • 2.Bxd5#
      • 1...Rxd6!
    • 1.fxe8Q+?
      • 1...Rd7+
        • 2.Qxd7#
      • 1...Rxe8!
    • 1.fxe8B+?
      • 1...Rd7+
        • 2.Bxd7#
      • 1...Rxe8!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Se5#
      • 1...Bxd4+
        • 2.Sxd4#
      • 1...Sd2
        • 2.Bxd5#
      • 1...Sf2
        • 2.Bxd5#
      • 1...Sg3
        • 2.Bxd5#
      • 1...Sc5
        • 2.Bxd5#
      • 1...Sg5
        • 2.Bxd5#
      • 1...Sef6
        • 2.Qb6#
      • 1...Sdf6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD,N_PINQ(F)::S(B)
    • B(b);N_GUARD::S(B),XB(b)
    • B(b);CHECK,XQ(F)::S(C),XB(b)
    • S(c);OGATE,P_SPINS(e)::B(A),XS(e)
    • S(e);N_PINQ(F),N_SPINP(h),P_SPINS(c)::QAB1(F)
  • Tries
    • Try
      • R(G);CHECK,XP(h)
      • Vars
        • S(c);OGATE,P_SPINS(e),XR(G)::B(A),XS(e)
      • Refutation
        • R(i);XR(G)
    • Try
      • P(I);CHECK,XB(j)
      • Vars
        • R(i);CHECK,N_GUARD,P_SPINR(i)::QAB1(I),XR(i)
      • Refutation
        • R(i);XQ(I)
    • Try
      • P(I);CHECK,XB(j)
      • Vars
        • R(i);CHECK,N_GUARD,P_SPINR(i)::B(I),XR(i)
      • Refutation
        • R(i);XB(I)
  • Actual
    • Q(F);
    • Threat
      • S(C)
    • Vars
      • B(b);CHECK,XQ(F)::S(B),XB(b)
      • S(c);OGATE,P_SPINS(e)::B(A),XS(e)
      • S(c);N_PINQ(F),N_SPINP(h),P_SPINS(e)::QAR1(F)
      • S(e);N_PINQ(F),N_SPINP(h),P_SPINS(c)::QAR2(F)
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