MESON Chess Problem Database

Problem Display
PID: 72406 (8/7K/2R5/pk1P4/p7/P1B5/N1P5/qN6 w - - 0 1)

Burbach, Johannes Jacob

Tijdschrift vd KNSB, 1947

8/7K/2R5/pk1P4/p7/P1B5/N1P5/qN6

#2

8 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.Sbxc3#
      • 2.Saxc3#
  • Tries
    • 1.Bd4?
      • threat
        • 2.c4#
      • 1...Qxb1
        • 2.Sc3#
      • 1...Qxa2
        • 2.Sc3#
      • 1...Qc3
        • 2.Sbxc3#
        • 2.Saxc3#
      • 1...Qxd4!
    • 1.Be5?
      • threat
        • 2.c4#
      • 1...Qxb1
        • 2.Sc3#
      • 1...Qxa2
        • 2.Sc3#
      • 1...Qc3
        • 2.Sbxc3#
        • 2.Saxc3#
      • 1...Qd4!
    • 1.Bf6?
      • threat
        • 2.c4#
      • 1...Qxb1
        • 2.Sc3#
      • 1...Qxa2
        • 2.Sc3#
      • 1...Qc3
        • 2.Sbxc3#
        • 2.Saxc3#
      • 1...Qd4!
  • Keys
    • 1.Bb2!
      • threat
        • 2.Sbc3#
        • 2.Sac3#
        • 2.c4#
      • 1...Qxb2
        • 2.c4#
      • 1...Qxb1
        • 2.Sc3#
      • 1...Qxa2
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • P(C)
      • Vars
        • Q(a);N_GUARD,P_PINP(C),XS(A)::S(B)
        • Q(a);N_GUARD,XS(B)::S(A)
      • Refutation
        • Q(a);XB(E)
    • Try
      • B(E);
      • Threat
        • P(C)
      • Vars
        • Q(a);N_GUARD,P_PINP(C),XS(A)::S(B)
        • Q(a);N_GUARD,XS(B)::S(A)
      • Refutation
        • Q(a);
    • Try
      • B(E);
      • Threat
        • P(C)
      • Vars
        • Q(a);N_GUARD,P_PINP(C),XS(A)::S(B)
        • Q(a);N_GUARD,XS(B)::S(A)
      • Refutation
        • Q(a);
  • Actual
    • B(E);
    • Threat
      • DUALS(3)
    • Vars
      • Q(a);XB(E)::P(C)
      • Q(a);P_PINP(C),XS(A)::S(B)
      • Q(a);XS(B)::S(A)
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