MESON Chess Problem Database

Problem Display
PID: 176091 (8/B3K3/8/3pk2N/7p/6Rn/6n1/1B6 w - - 0 1)

Bethge, Friedrich

Schach-Echo, 1941

8/B3K3/8/3pk2N/7p/6Rn/6n1/1B6

#2

5 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Re3#
    • 1...Se3
      • 2.Rxe3#
    • 1...Sgf4
      • 2.Re3#
    • 1...Sg1
      • 2.Rg5#
    • 1...Sf2
      • 2.Rg5#
    • 1...Shf4
      • 2.Rg5#
    • 1...Sg5
      • 2.Rxg5#
  • Tries
    • 1.Rxg2?
      • threat
        • 2.Re2#
      • 1...Sg1
        • 2.Rg5#
      • 1...Sf2
        • 2.Rg5#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...d4!
    • 1.Rf3?
      • threat
        • 2.Rf5#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sgf4
        • 2.Re3#
      • 1...Shf4!
    • 1.Rxh3?
      • 1...Se1
        • 2.Re3#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sf4
        • 2.Re3#
      • 1...d4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Kxf4
        • 2.Bb8#
      • 1...Sgxf4
        • 2.Re3#
      • 1...Shxf4
        • 2.Rg5#
      • 1...d4
        • 2.Bb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::R(B)
    • S(a);N_GUARD::R(B),XS(a)
    • S(b);N_GUARD::R(B)
    • S(b);N_GUARD::R(B),XS(b)
  • Tries
    • Try
      • R(B);XS(a)
      • Threat
        • R(B)
      • Vars
        • S(b);N_GUARD::R(B)
        • S(b);N_GUARD::R(B),XS(b)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • S(a);N_GUARD::R(B),XS(a)
        • S(a);N_GUARD::R(B)
      • Refutation
        • S(b);
    • Try
      • R(B);XS(b)
      • Vars
        • S(a);N_GUARD::R(B)
        • S(a);N_GUARD::R(B),XS(a)
      • Refutation
        • P(d);
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(e);S_FLIGHT,XS(C)::B(D)
      • S(a);N_GUARD,SBLOCK,XS(C)::R(B)
      • S(b);N_GUARD,SBLOCK,XS(C)::R(B)
      • P(d);SBLOCK::B(D)
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