MESON Chess Problem Database

Problem Display
PID: 193907 (8/8/4K1p1/8/3B1kp1/4R3/4P2R/8 w - - 0 1)

Mortriner, Lucius

Our Young People, 1916

8/8/4K1p1/8/3B1kp1/4R3/4P2R/8

#2

5 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Rf2#
  • Tries
    • 1.Rg3?
      • 1...Kxg3
        • 2.Be5#
      • 1...Ke4
        • 2.Rxg4#
      • 1...Kg5
        • 2.Be3#
      • 1...g5!
    • 1.Re4+?
      • 1...Kg3
        • 2.Be5#
      • 1...Kg5
        • 2.Be3#
        • 2.Bf6#
      • 1...Kxe4!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Rf2#
      • 1...g3
        • 2.Rh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK::R(B)
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT,XR(C)::B(D)
        • K(a);P-FLIGHT::R(C),XP(b)
        • K(a);P_SPINP(b),S_FLIGHT::B(D)
      • Refutation
        • P(c);
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);P-FLIGHT,XR(C)
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • R(B)
    • Vars
      • P(b);OGATEB::R(B)
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