MESON Chess Problem Database

Problem Display
PID: 276830 (3N4/Bp2Kb2/P2Np3/4k3/3pP1p1/2p3P1/5r2/7R w - - 0 1)

Hoffmann, Fritz

Stella Polaris, 1971

3N4/Bp2Kb2/P2Np3/4k3/3pP1p1/2p3P1/5r2/7R

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.S8xf7#
    • 1...Rb2
      • 2.S8xf7#
    • 1...Rc2
      • 2.S8xf7#
    • 1...Rd2
      • 2.S8xf7#
    • 1...Re2
      • 2.S8xf7#
    • 1...Rg2
      • 2.S8xf7#
    • 1...Rh2
      • 2.S8xf7#
    • 1...bxa6
      • 2.Sc6#
    • 1...b5
      • 2.Sc6#
    • 1...b6
      • 2.Sc6#
  • Tries
    • 1.Rb1?
      • threat
        • 2.Rb5#
      • 1...bxa6
        • 2.Sc6#
      • 1...Rb2
        • 2.S8xf7#
      • 1...b5
        • 2.Sc6#
        • 2.Rxb5#
      • 1...Be8!
    • 1.Rd1?
      • threat
        • 2.Bxd4#
      • 1...Rd2
        • 2.S8xf7#
      • 1...b6
        • 2.Sc6#
      • 1...d3!
    • 1.Rh5+?
      • 1...Rf5
        • 2.S8xf7#
      • 1...Bxh5!
  • Keys
    • 1.Re1!
      • threat
        • 2.Sc4#
      • 1...Re2
        • 2.S8xf7#
      • 1...b5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::S(H),XB(h)
    • P(g);N_GUARD,XP(D)::S(H)
    • P(g);N_GUARD::S(H)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • P(g);N_GUARD,XP(D)::S(H)
        • R(a);N_GUARD::S(H),XB(h)
      • Refutation
        • B(h);
    • Try
      • R(A);
      • Threat
        • B(F),XP(c)
      • Vars
        • R(a);N_GUARD::S(H),XB(h)
        • P(g);N_GUARD::S(H)
      • Refutation
        • P(c);
    • Try
      • R(A);CHECK
      • Vars
        • R(a);P_SPINR(a)::S(H),XB(h)
      • Refutation
        • B(h);XR(A)
  • Actual
    • R(A);
    • Threat
      • S(E)
    • Vars
      • R(a);N_GUARD::S(H),XB(h)
      • P(g);N_GUARD::S(H)
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