MESON Chess Problem Database

Problem Display
PID: 137402 (8/8/8/8/8/8/1RK5/k1n5 w - - 0 1)

May, G

May, Luigi

Die Schwalbe, 1929

8/8/8/8/8/8/1RK5/k1n5

#2

2 + 2

881 The Australasian Chess Review 1929
3713 Snap 2010
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Rb1#
  • Tries
    • 1.Rb5?
      • 1...Ka2
        • 2.Ra5#
      • 1...Sa2
        • 2.Rb1#
      • 1...Se2
        • 2.Ra5#
      • 1...Sd3
        • 2.Ra5#
      • 1...Sb3!
    • 1.Rb6?
      • 1...Ka2
        • 2.Ra6#
      • 1...Sa2
        • 2.Rb1#
      • 1...Se2
        • 2.Ra6#
      • 1...Sd3
        • 2.Ra6#
      • 1...Sb3!
    • 1.Rb7?
      • 1...Ka2
        • 2.Ra7#
      • 1...Sa2
        • 2.Rb1#
      • 1...Se2
        • 2.Ra7#
      • 1...Sd3
        • 2.Ra7#
      • 1...Sb3!
    • 1.Rb8?
      • 1...Ka2
        • 2.Ra8#
      • 1...Sa2
        • 2.Rb1#
      • 1...Se2
        • 2.Ra8#
      • 1...Sd3
        • 2.Ra8#
      • 1...Sb3!
  • Keys
    • 1.Rb4!
      • 1...Ka2
        • 2.Ra4#
      • 1...Sa2
        • 2.Rb1#
      • 1...Se2
        • 2.Ra4#
      • 1...Sb3
        • 2.Ra4#
      • 1...Sd3
        • 2.Ra4#

Anticipated by 21570(1919), 21569(1919)

This anticipates 110025(1929-1931)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(A)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
        • S(b);SBLOCK::R1(A)
        • S(b);N_GUARD::R(A)
      • Refutation
        • S(b);
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
        • S(b);SBLOCK::R1(A)
        • S(b);N_GUARD::R(A)
      • Refutation
        • S(b);
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
        • S(b);SBLOCK::R1(A)
        • S(b);N_GUARD::R(A)
      • Refutation
        • S(b);
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
        • S(b);SBLOCK::R1(A)
        • S(b);N_GUARD::R(A)
      • Refutation
        • S(b);
  • Actual
    • R(A);
    • Vars
      • K(a);P-FLIGHT::R(A)
      • S(b);SBLOCK::R1(A)
      • S(b);N_GUARD::R(A)
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