MESON Chess Problem Database

Problem Display
PID: 90790 (KB6/5pQ1/5R2/3PN1b1/1P1kP3/npN5/1r1P4/2n3q1 w - - 0 1)

Haring, Jacobus

Die Schwalbe, 1960

KB6/5pQ1/5R2/3PN1b1/1P1kP3/npN5/1r1P4/2n3q1

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf6
      • 2.Qxg1#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Ba7#
      • 1...Bf6
        • 2.Qxg1#
      • 1...Be7
        • 2.Qxg1#
      • 1...Bd8
        • 2.Qxg1#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Sc6#
      • 1...f6
        • 2.Qa7#
      • 1...Sb5!
    • 1.Rf4?
      • threat
        • 2.Ba7#
      • 1...Bf6
        • 2.Qxg1#
      • 1...Be7
        • 2.Qxg1#
      • 1...Bd8
        • 2.Qxg1#
      • 1...Sd3
        • 2.Se2#
      • 1...Sc4
        • 2.Sb5#
      • 1...Sb5
        • 2.Sxb5#
      • 1...f6
        • 2.Qa7#
      • 1...Rxd2!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Ba7#
      • 1...Bf6
        • 2.Qxg1#
      • 1...Be7
        • 2.Qxg1#
      • 1...Bd8
        • 2.Qxg1#
      • 1...Sd3
        • 2.Sf3#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sb5
        • 2.Rc4#
      • 1...f6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(g);OGATE,XR(G)::QAB(H),XQ(b)
  • Tries
    • Try
      • R(G);
      • Threat
        • B(J)
      • Vars
        • B(g);OGATE::QAB(H),XQ(b)
        • S(a);N_GUARD::R1(G),XS(a)
        • S(d);SBLOCK::QAB(H)+S(F),DCHECK
        • P(h);OGATE::QAB(H)
      • Refutation
        • S(d);
    • Try
      • R(G);
      • Threat
        • B(J)
      • Vars
        • B(g);OGATE::QAB(H),XQ(b)
        • S(a);N_GUARD::S(B)
        • S(d);N_GUARD::S(B)
        • S(d);N_GUARD::S(B),XS(d)
        • P(h);OGATE::QAB(H)
      • Refutation
        • R(c);XP(A)
  • Actual
    • R(G);
    • Threat
      • B(J)
    • Vars
      • B(g);OGATE::QAB(H),XQ(b)
      • S(a);SBLOCK::QAB(H)+S(F),DCHECK
      • S(d);N_GUARD::R1(G),XS(d)
      • S(d);N_GUARD::R1(G)
      • P(h);OGATE::QAB(H)
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