MESON Chess Problem Database

Problem Display
PID: 6763 (8/8/8/8/4N3/1KQ3b1/7r/1k6 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Kieler Neueste Nachrichten, 1933

8/8/8/8/4N3/1KQ3b1/7r/1k6

#2

3 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
3713 Snap 2001
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Sd2#
      • 2.Qb2#
    • 1...Rb2+
      • 2.Qxb2#
    • 1...Rd2
      • 2.Sxd2#
    • 1...Rf2
      • 2.Qe1#
    • 1...Rh3
      • 2.Sd2#
      • 2.Qb2#
    • 1...Rh4
      • 2.Sd2#
      • 2.Qb2#
    • 1...Rh5
      • 2.Sd2#
      • 2.Qb2#
    • 1...Rh6
      • 2.Sd2#
      • 2.Qb2#
    • 1...Rh7
      • 2.Sd2#
      • 2.Qb2#
    • 1...Rh8
      • 2.Sd2#
      • 2.Qb2#
    • 1...Be1
      • 2.Qxe1#
    • 1...Bf2
      • 2.Sd2#
      • 2.Qb2#
    • 1...Be5
      • 2.Qe1#
    • 1...Bd6
      • 2.Qe1#
    • 1...Bc7
      • 2.Qe1#
    • 1...Bb8
      • 2.Qe1#
  • Tries
    • 1.Qc2+?
      • 1...Ka1
        • 2.Qd1#
        • 2.Qc1#
      • 1...Rxc2!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qe1#
        • 2.Qb2#
      • 1...Rxf2
        • 2.Qe1#
      • 1...Bxf2
        • 2.Qb2#
      • 1...Rh1
        • 2.Qb2#
      • 1...Bf4
        • 2.Qb2#
      • 1...Be5
        • 2.Qe1#

Anticipated by 6119(1927)

This anticipates 234504(1959), 234505(1959)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(b);CHECK,N_GUARD::QAR1(B),XR(b)
    • R(b);N_GUARD::S(C),XR(b)
    • R(b);S_CUTB(c)::QAR(B)
    • B(c);N_GUARD::QAR(B),XB(c)
    • B(c);N_GUARD::QAR(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • R(b);XQ(B)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);XS(C)::QAR(B)
      • B(c);XS(C)::QAR1(B)
      • R(b);::QAR1(B)
      • B(c);::QAR1(B)
      • B(c);::QAR(B)
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