MESON Chess Problem Database

Problem Display
PID: 178324 (8/8/3p3R/p2B1k2/Pp5B/1K2P3/4P3/8 w - - 0 1)

Langsand, R

Morgenbladet, 1915

8/8/3p3R/p2B1k2/Pp5B/1K2P3/4P3/8

#2

7 + 4

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Be6#
    • 1...Ke5
      • 2.Rh5#
  • Tries
    • 1.Ka2?
      • 1...Kg4
        • 2.Be6#
      • 1...Ke5
        • 2.Rh5#
      • 1...b3+!
    • 1.Kb2?
      • 1...Kg4
        • 2.Be6#
      • 1...Ke5
        • 2.Rh5#
      • 1...b3!
    • 1.Kc2?
      • 1...Kg4
        • 2.Be6#
      • 1...Ke5
        • 2.Rh5#
      • 1...b3+!
    • 1.Kc4?
      • 1...Kg4
        • 2.Be6#
      • 1...Ke5
        • 2.Rh5#
      • 1...b3!
    • 1.Be7?
      • 1...Ke5
        • 2.Rh5#
      • 1...Kg4!
    • 1.Bd8?
      • 1...Ke5
        • 2.Rh5#
      • 1...Kg4!
    • 1.Rh8?
      • 1...Kg4
        • 2.Be6#
      • 1...Ke5
        • 2.Rh5#
      • 1...Kg6!
  • Keys
    • 1.Rh7!
      • 1...Kg4
        • 2.Be6#
      • 1...Ke5
        • 2.Rh5#
      • 1...Kg6
        • 2.Be4#

Anticipated by 1953(1859), 4775(1891), 234958(1894), 120937(1898), 57017(1900), 31183(1902), 175166(1902), 181896(1905), 50715(1907), 184830(1908), 189845(1912)

This anticipates 193481(1915), 75889(1920), 206553(1925), 206593(1925), 231389(1927), 76533(1933), 76553(1936), 101951(1939), 19270(1943), 76843(1947), 51132(1950), 184308(1950), 51583(1965), 213018(1967), 121122(1980), 240454(1992)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(F)
    • K(c);P-FLIGHT::R(G)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(F)
        • K(c);P-FLIGHT::R(G)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(F)
        • K(c);P-FLIGHT::R(G)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(F)
        • K(c);P-FLIGHT::R(G)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(F)
        • K(c);P-FLIGHT::R(G)
      • Refutation
        • P(a);
    • Try
      • B(E);
      • Vars
        • K(c);P-FLIGHT::R(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(c);P-FLIGHT::R(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(G);
      • Vars
        • K(c);S_FLIGHT::B(F)
        • K(c);P-FLIGHT::R(G)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(G);
    • Vars
      • K(c);S_FLIGHT::B(F)
      • K(c);P-FLIGHT::R(G)
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