MESON Chess Problem Database

Problem Display
PID: 274092 (R2r4/4n3/r4PP1/1QR1p3/1nb2B2/3pPp2/3P1K2/7k w - - 0 1)

Flatt, Karl

Zurcher Woche, 1963

(First published on Fri May 31 1963)

R2r4/4n3/r4PP1/1QR1p3/1nb2B2/3pPp2/3P1K2/7k

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rxa1#
    • 1...Rb6
      • 2.Ra1#
    • 1...Rc6
      • 2.Ra1#
    • 1...Rad6
      • 2.Ra1#
    • 1...Re6
      • 2.Ra1#
    • 1...Rxf6
      • 2.Ra1#
    • 1...Rd4
      • 2.Rh8#
    • 1...Rd5
      • 2.Rh8#
    • 1...Rdd6
      • 2.Rh8#
    • 1...Rd7
      • 2.Rh8#
    • 1...Rh8
      • 2.Rxh8#
    • 1...Ba2
      • 2.Rc1#
    • 1...Bxb5
      • 2.Rc1#
    • 1...Bd5
      • 2.Rc1#
    • 1...Be6
      • 2.Rc1#
    • 1...Bf7
      • 2.Rc1#
    • 1...Bg8
      • 2.Rc1#
    • 1...Sbd5
      • 2.Qb1#
    • 1...Sbc6
      • 2.Qb1#
    • 1...exf4
      • 2.Rh5#
    • 1...e4
      • 2.Rh5#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qh3#
      • 1...Rxd7
        • 2.Rh8#
      • 1...Re6
        • 2.Ra1#
      • 1...Rh8
        • 2.Rxh8#
      • 1...Be6
        • 2.Rc1#
      • 1...Sf5!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qxf3#
      • 1...exf4
        • 2.Rh5#
      • 1...Rc6
        • 2.Ra1#
      • 1...Rd5
        • 2.Rh8#
      • 1...Bd5
        • 2.Rc1#
      • 1...Sbd5
        • 2.Qb1#
      • 1...Sbc6
        • 2.Qb1#
      • 1...Sed5
        • 2.Qh7#
      • 1...Sec6
        • 2.Qh7#
      • 1...e4
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • R(g);OGATE::R(I),XR(g)
    • R(g);OGATE::R(I)
    • R(g);OGATE,XP(G)::R(I)
    • R(i);OGATE::R(I)
    • R(i);OGATE::R(I),XR(i)
    • B(e);OGATE,SBLOCK::R(F)
    • B(e);OGATE,XQ(E)::R(F)
    • B(e);OGATE::R(F)
    • S(d);OGATE::QAR(E)
    • P(f);OGATE,XB(D)::R(F)
    • P(f);OGATE::R(F)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • R(i);OGATE,XQ(E)::R(I)
        • R(g);OGATE::R(I)
        • R(i);OGATE::R(I),XR(i)
        • B(e);OGATE::R(F)
      • Refutation
        • S(h);
  • Actual
    • Q(E);P_PINP(c)
    • Threat
      • QAB(E),XP(c)
    • Vars
      • P(f);OGATE,XB(D)::R(F)
      • R(g);N_SPINP(c),OGATE::R(I)
      • R(i);N_SPINP(c),OGATE::R(I)
      • B(e);N_SPINP(c),OGATE::R(F)
      • S(d);N_SPINP(c),OGATE::QAR(E)
      • S(h);N_SPINP(c),OGATE::QAR(E)
      • P(f);N_SPINP(c),OGATE::R(F)
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