MESON Chess Problem Database

Problem Display
PID: 198768 (8/4N2R/3pPk2/3P4/8/5K2/4p3/4B3 w - - 0 1)

Rottigni, GE

L'Alfiere di Re, 1921

8/4N2R/3pPk2/3P4/8/5K2/4p3/4B3

#2

6 + 3

6490 yacpdb 2019
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Bc3#
    • 1...Kg5
      • 2.Bh4#
  • Tries
    • 1.Ke3?
      • 1...Ke5
        • 2.Bc3#
      • 1...Kg5!
    • 1.Rf7+?
      • 1...Ke5
        • 2.Bc3#
      • 1...Kg5!
    • 1.Rg7?
      • threat
        • 2.Bc3#
      • 1...Ke5
        • 2.Bc3#
      • 1...Kxg7!
  • Keys
    • 1.Rh8!
      • 1...Ke5
        • 2.Bc3#
      • 1...Kg5
        • 2.Bh4#
      • 1...Kxe7
        • 2.Bh4#
      • 1...Kg7
        • 2.Bc3#

Anticipated by 207201(1868), 214564(1880), 28686(1904)

This anticipates 207467(1995)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Threat
        • B(A)
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • K(c);S_FLIGHT,XR(F)
  • Actual
    • R(F);
    • Vars
      • K(c);S_FLIGHT::B(A)
      • K(c);S_FLIGHT,XS(E)::B(A)
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