MESON Chess Problem Database

Problem Display
PID: 32422 (3BKb2/qb1P4/R3N1N1/1p2rk1P/2Bp3R/4pr1P/8/8 w - - 0 1)

Cassinelli, A

De Problemist, 1928

3BKb2/qb1P4/R3N1N1/1p2rk1P/2Bp3R/4pr1P/8/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Rf4#
    • 1...Rxh3
      • 2.Rf4#
    • 1...Rf4
      • 2.Rxf4#
    • 1...Rc5
      • 2.Sxd4#
    • 1...Rd5
      • 2.Bd3#
    • 1...Rxe6+
      • 2.Bxe6#
  • Tries
    • 1.Kxf8?
      • threat
        • 2.Sg7#
      • 1...Rxe6
        • 2.Bxe6#
      • 1...Rf4
        • 2.Rxf4#
      • 1...Qc5+!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Sh4#
      • 1...Rxe6+
        • 2.Bxe6#
      • 1...Rxh3
        • 2.Rf4#
      • 1...Rf4
        • 2.Rxf4#
      • 1...Be7
        • 2.Sg7#
      • 1...Re4
        • 2.Rg5#
      • 1...Rc5
        • 2.Sxd4#
      • 1...Rd5
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::R1(C)
    • R(b);N_GUARD,XP(A)::R1(C)
    • R(b);N_GUARD::R1(C),XR(b)
    • R(e);N_PINS(F)::S(F),XP(c)
    • R(e);N_GUARD,N_PINS(F),S_CUTB(h)::B(B)
    • R(e);CHECK,OGATE,XS(F)::B(B),XR(e)
  • Tries
    • Try
      • K(J);N_SPINS(F),P-FLIGHT,XB(i)
      • Threat
        • S(F)
      • Vars
        • R(e);OGATE,XS(F)::B(B),XR(e)
        • R(b);N_GUARD::R1(C),XR(b)
      • Refutation
        • Q(g);CHECK
  • Actual
    • R(C);
    • Threat
      • S(G)
    • Vars
      • R(e);CHECK,OGATE,XS(F)::B(B),XR(e)
      • R(b);N_GUARD,XP(A)::R1(C)
      • R(b);N_GUARD::R1(C),XR(b)
      • B(i);N_PINS(F)::S(F)
      • R(e);SBLOCK::R1(C)
      • R(e);N_PINS(F)::S(F),XP(c)
      • R(e);N_GUARD,N_PINS(F),S_CUTB(h)::B(B)
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