MESON Chess Problem Database

Problem Display
PID: 261019 (3K4/p7/4pN2/1pP1k3/r1b3Q1/2np4/5N2/5R2 w - - 0 1)

Teichmann, Richard

Neue Zurcher Zeitung, 1916

3K4/p7/4pN2/1pP1k3/r1b3Q1/2np4/5N2/5R2

#2

6 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Sxd3#
    • 1...Ba2
      • 2.Sxd3#
    • 1...Bb3
      • 2.Sxd3#
    • 1...Bd5
      • 2.Sxd3#
      • 2.Sd7#
    • 1...Sd5
      • 2.Sd7#
  • Tries
    • 1.Qg3+?
      • 1...Kf5
        • 2.Sd1#
        • 2.Sh1#
        • 2.Sxd3#
        • 2.Sh3#
        • 2.S2e4#
      • 1...Kxf6
        • 2.Sd1#
        • 2.Sh1#
        • 2.Sxd3#
        • 2.Sh3#
        • 2.Se4#
      • 1...Kd4!
  • Keys
    • 1.Qg1!
      • threat
        • 2.S2g4#
      • 1...Kd4
        • 2.S2g4#
      • 1...Kf4
        • 2.Sxd3#
      • 1...Kf5
        • 2.Sxd3#
      • 1...Kxf6
        • 2.Sxd3#
      • 1...Ba2
        • 2.Sxd3#
      • 1...Bb3
        • 2.Sxd3#
      • 1...Bd5
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(f);S_CUTB(d),S_FLIGHT,XS(E)::R(A)+S(B),XP(b)
    • B(d);N_GUARD::S(B),XP(b)
    • S(a);SBLOCK::S(E)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • S(B)
    • Vars
      • K(f);S_FLIGHT::QAB(C)+S(B)
      • K(f);S_FLIGHT::R(A)+S(B),DCHECK,XP(b)
      • K(f);P-FLIGHT,S_CUTB(d)::R(A)+S(B),XP(b)
      • K(f);S_CUTB(d),S_FLIGHT,XS(E)::R(A)+S(B),XP(b)
      • B(d);N_GUARD::S(B),XP(b)
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