MESON Chess Problem Database

Problem Display
PID: 82093 (8/b1pN4/n1Q3Rq/1B2Bkp1/b6r/r3p1PP/P1N4n/7K w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problemnoter, 1961

8/b1pN4/n1Q3Rq/1B2Bkp1/b6r/r3p1PP/P1N4n/7K

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Rf6#
    • 1...Qh7
      • 2.Rf6#
    • 1...Re4
      • 2.Qe6#
      • 2.Qf6#
  • Tries
    • 1.Bd3+?
      • 1...Re4
        • 2.Bxe4#
        • 2.Qxe4#
        • 2.Qe6#
        • 2.Qf6#
      • 1...Rxd3!
    • 1.Bc3?
      • threat
        • 2.Qe6#
      • 1...Qxg6
        • 2.Qd5#
      • 1...Re4
        • 2.Qf6#
      • 1...Sc5
        • 2.Sxe3#
      • 1...Bb3!
    • 1.Bd4?
      • threat
        • 2.Qe6#
      • 1...Qxg6
        • 2.Qd5#
      • 1...Bb3
        • 2.Sxe3#
      • 1...Re4
        • 2.Qf6#
      • 1...Sc5!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Qe6#
      • 1...Qxg6
        • 2.Qd5#
      • 1...Bb3
        • 2.Bd3#
      • 1...Sc5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(i);N_GUARD::R1(I)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • R(b);XB(F)
    • Try
      • B(G);
      • Threat
        • QAB1(H)
      • Vars
        • Q(i);SBLOCK,XR(I)::QAR2(H)
        • R(e);SBLOCK::QAR1(H)
        • S(h);S_CUTB(j)::S(C),XP(c)
      • Refutation
        • B(d);
    • Try
      • B(G);
      • Threat
        • QAB1(H)
      • Vars
        • Q(i);SBLOCK,XR(I)::QAR2(H)
        • B(d);S_CUTR(b)::S(C),XP(c)
        • R(e);SBLOCK::QAR1(H)
      • Refutation
        • S(h);
  • Actual
    • B(G);
    • Threat
      • QAB1(H)
    • Vars
      • Q(i);SBLOCK,XR(I)::QAR2(H)
      • B(d);S_CUTR(b)::B(F)
      • S(h);S_CUTB(j)::S(C)
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