MESON Chess Problem Database

Problem Display
PID: 173816 (1K6/p7/rk6/N1pp4/P7/3B4/2PQ4/8 w - - 0 1)

Borovik, Boris V

Die Schwalbe, 1983

1K6/p7/rk6/N1pp4/P7/3B4/2PQ4/8

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5
      • 2.Qh6#
    • 1...c4
      • 2.Qb4#
  • Tries
    • 1.Kc8?
      • 1...Rxa5
        • 2.Qh6#
      • 1...c4
        • 2.Qb4#
      • 1...d4!
    • 1.Bf1?
      • 1...Rxa5
        • 2.Qh6#
      • 1...c4
        • 2.Qb4#
      • 1...d4!
    • 1.Be2?
      • 1...Rxa5
        • 2.Qh6#
      • 1...c4
        • 2.Qb4#
      • 1...d4!
    • 1.Bc4?
      • 1...Rxa5
        • 2.Qh6#
      • 1...dxc4
        • 2.Qd8#
      • 1...d4!
    • 1.Bb5?
      • 1...Rxa5
        • 2.Qh6#
      • 1...d4
        • 2.Sc4#
      • 1...c4!
    • 1.Bf5?
      • 1...Rxa5
        • 2.Qh6#
      • 1...c4
        • 2.Qb4#
      • 1...d4!
    • 1.Bh7?
      • 1...Rxa5
        • 2.Qh6#
      • 1...c4
        • 2.Qb4#
      • 1...d4!
    • 1.Qe1?
      • 1...Rxa5
        • 2.Qe6#
      • 1...c4
        • 2.Qb4#
      • 1...d4!
    • 1.Qc3?
      • 1...Rxa5
        • 2.Qf6#
      • 1...c4
        • 2.Qb4#
      • 1...d4!
  • Keys
    • 1.Be4!
      • 1...Rxa5
        • 2.Qh6#
      • 1...dxe4
        • 2.Qd8#
      • 1...c4
        • 2.Qb4#
      • 1...d4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK,XS(E)::QAR(B)
    • P(a);N_GUARD::QAR2(B)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(b);OGATE,XB(C)::QAB(B)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(b);N_GUARD::S(E)
      • Refutation
        • P(a);
    • Try
      • B(C);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
  • Actual
    • B(C);
    • Vars
      • R(c);SBLOCK,XS(E)::QAR(B)
      • P(b);OGATE,XB(C)::QAB(B)
      • P(a);N_GUARD::QAR2(B)
      • P(b);N_GUARD::S(E)
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