MESON Chess Problem Database

Problem Display
PID: 65189 (8/6b1/p6q/8/Q3B3/B7/1R2P2p/2k1n2K w - - 0 1)

von Holzhausen, Walther Freiherr

Deutsche Schachblatter, 1935

8/6b1/p6q/8/Q3B3/B7/1R2P2p/2k1n2K

#2

6 + 6

23 Die Schwalbe 2005
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Rb1#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sg2
      • 2.Qc2#
    • 1...Sd3
      • 2.Qc2#
    • 1...Sf3
      • 2.Qc2#
  • Tries
    • 1.Bb4?
      • threat
        • 2.Rb1#
        • 2.Qa1#
      • 1...Kxb2
        • 2.Qa3#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Bc3
        • 2.Qa1#
      • 1...Sd3
        • 2.Qc2#
        • 2.Qa1#
      • 1...Bxb2!
    • 1.Bc5?
      • threat
        • 2.Qa1#
      • 1...Kxb2
        • 2.Qa3#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Bxb2!
    • 1.Bd6?
      • threat
        • 2.Qa1#
      • 1...Kxb2
        • 2.Qa3#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Bxb2!
    • 1.Be7?
      • threat
        • 2.Qa1#
      • 1...Kxb2
        • 2.Qa3#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Bxb2!
    • 1.Rd2+?
      • 1...Bb2
        • 2.Rd1#
        • 2.Qd1#
      • 1...Kxd2!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Qa1#
      • 1...Kxb2
        • 2.Qa3#
      • 1...Bxb2
        • 2.Bxh6#
      • 1...Sc2
        • 2.Qxc2#

Anticipated by 654(1918)

This anticipates 106513(1951)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(e);SBLOCK::B(D)+R(B),DCHECK
    • S(b);N_GUARD::QAR1(E),XS(b)
    • S(b);N_GUARD::QAR1(E)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
        • B(f);::QAR2(E)
      • Refutation
        • B(f);XR(B)
    • Try
      • B(D);
      • Threat
        • QAR2(E)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • B(f);XR(B)
    • Try
      • B(D);
      • Threat
        • QAR2(E)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • B(f);XR(B)
    • Try
      • B(D);
      • Threat
        • QAR2(E)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • B(f);XR(B)
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • B(D);
    • Threat
      • QAR2(E)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(B)::QAB1(E)
      • B(f);OGATE,SBLOCK,XR(B)::B(D),XQ(e)
      • S(b);N_GUARD::QAR1(E),XS(b)
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