MESON Chess Problem Database

Problem Display
PID: 249764 (3Kn3/1pp1p3/3k4/1P1B1P2/4P3/1pQ3b1/3p4/R7 w - - 0 1)

Haring, Jacobus

Stella Polaris, 1969

3Kn3/1pp1p3/3k4/1P1B1P2/4P3/1pQ3b1/3p4/R7

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Qxc7#
    • 1...Sg7
      • 2.Qxc7#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Qd4#
      • 1...d1Q
        • 2.Rxd1#
      • 1...d1R
        • 2.Rxd1#
      • 1...Bf2
        • 2.e5#
      • 1...Be5
        • 2.Qb4#
      • 1...e5
        • 2.Qb4#
      • 1...Sf6!
    • 1.Be6?
      • threat
        • 2.Qd4#
      • 1...d1Q
        • 2.Rxd1#
      • 1...d1R
        • 2.Rxd1#
      • 1...Bf2
        • 2.e5#
      • 1...Sf6
        • 2.Qxc7#
      • 1...c5
        • 2.Qxg3#
      • 1...Be5!
  • Keys
    • 1.Bxb7!
      • threat
        • 2.Qd4#
      • 1...d1Q
        • 2.Rxd1#
      • 1...d1R
        • 2.Rxd1#
      • 1...Be5
        • 2.Qc6#
      • 1...Bf2
        • 2.e5#
      • 1...Sf6
        • 2.Qxc7#
      • 1...c5
        • 2.Ra6#
      • 1...e5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(h);N_GUARD::QAB1(B),XP(f)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAR2(B)
      • Vars
        • P(a);OGATEB::R(A),XQ(a)
        • P(a);OGATEB::R(A),XR(a)
        • B(c);N_GUARD::P(C)
        • B(c);SBLOCK::QAB(B)
        • P(g);SBLOCK::QAB(B)
      • Refutation
        • S(h);
    • Try
      • B(E);
      • Threat
        • QAR2(B)
      • Vars
        • P(a);OGATEB::R(A),XQ(a)
        • P(a);OGATEB::R(A),XR(a)
        • B(c);N_GUARD::P(C)
        • S(h);N_GUARD::QAB1(B),XP(f)
        • P(f);SBLOCK::QAB(B),XB(c)
      • Refutation
        • B(c);
  • Actual
    • B(E);XP(e)
    • Threat
      • QAR2(B)
    • Vars
      • P(a);OGATEB::R(A),XQ(a)
      • P(a);OGATEB::R(A),XR(a)
      • B(c);SBLOCK::QAR1(B)
      • B(c);N_GUARD::P(C)
      • S(h);N_GUARD::QAB1(B),XP(f)
      • P(f);N_GUARD::R(A)
      • P(g);SBLOCK::QAR1(B)
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Developed and maintained by Brian Stephenson.
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