MESON Chess Problem Database

Problem Display
PID: 269875 (3B4/8/3R1R2/4kr2/KN5P/2p1rpnB/2P2N2/8 w - - 0 1)

Chicco, Adriano

Comm., Problemisten, 1947

3B4/8/3R1R2/4kr2/KN5P/2p1rpnB/2P2N2/8

#2

9 + 6

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Sbd3#
    • 1...Re2
      • 2.Sbd3#
    • 1...Rd3
      • 2.Sbxd3#
    • 1...Re4
      • 2.Sd3#
    • 1...Rf4
      • 2.Rd5#
      • 2.Rfe6#
    • 1...Rg5
      • 2.Sc6#
      • 2.Rd5#
    • 1...Rh5
      • 2.Sc6#
      • 2.Rd5#
  • Tries
    • 1.Rde6+?
      • 1...Kf4
        • 2.Sd5#
      • 1...Kd4!
    • 1.Rxf5+?
      • 1...Kxd6
        • 2.Rd5#
      • 1...Sxf5!
  • Keys
    • 1.Bc7!
      • 1...Kf4
        • 2.Rd4#
      • 1...Rxf6
        • 2.Rd5#
      • 1...Re1
        • 2.Sbd3#
      • 1...Re2
        • 2.Sbd3#
      • 1...Rd3
        • 2.Sbxd3#
      • 1...Re4
        • 2.Sd3#
      • 1...Rf4
        • 2.Rfe6#
      • 1...Rg5
        • 2.Sc6#
      • 1...Rh5
        • 2.Sc6#
      • 1...Sf1
        • 2.Rxf5#
      • 1...Sh1
        • 2.Rxf5#
      • 1...Se2
        • 2.Rxf5#
      • 1...Se4
        • 2.Rxf5#
      • 1...Sh5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::S(E)
    • R(b);N_GUARD::S(E),XR(b)
    • R(b);N_GUARD,P_PINS(E),SBLOCK::S(B)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(e);N_GUARD,P_SPINR(f),S_FLIGHT::S(E)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(H);CHECK,XR(f)
      • Vars
        • K(e);OGATE,S_FLIGHT,XR(G)::R1(H)
      • Refutation
        • S(d);XR(H)
  • Actual
    • B(I);
    • Vars
      • K(e);N_GUARD,P_SPINR(f),S_FLIGHT::B(I)+R(G),DCHECK
      • R(f);SBLOCK,XR(H)::B(I)+R(G),DCHECK
      • R(b);N_GUARD::S(E)
      • R(b);N_GUARD::S(E),XR(b)
      • R(b);N_GUARD,P_PINS(E),SBLOCK::S(B)
      • R(f);P_PINS(E),SBLOCK::R1(H)
      • R(f);::S(E)
      • S(d);N_GUARD::R1(H),XR(f)
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