MESON Chess Problem Database

Problem Display
PID: 73143 (8/8/5p1B/5p2/KP1k4/1B1p1P1p/3Q1P2/b7 w - - 0 1)

Rothwell, Stephen

Neue Osnabrucker Zeitung, 1993

8/8/5p1B/5p2/KP1k4/1B1p1P1p/3Q1P2/b7

#2

7 + 6

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf4#
    • 1...Bb2
      • 2.Qxb2#
    • 1...Bc3
      • 2.Qe3#
      • 2.Qf4#
  • Tries
    • 1.Bf4?
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bc3
        • 2.Qe3#
      • 1...h2!
    • 1.Bg5?
      • threat
        • 2.Bxf6#
      • 1...Ke5
        • 2.Qf4#
      • 1...fxg5!
    • 1.Qc1?
      • threat
        • 2.Qxa1#
        • 2.Qc5#
      • 1...Ke5
        • 2.Qf4#
        • 2.Qc5#
      • 1...Bb2
        • 2.Qxb2#
        • 2.Qc5#
      • 1...Bc3
        • 2.Qe3#
        • 2.Qf4#
      • 1...d2!
    • 1.Qe1?
      • threat
        • 2.Qxa1#
      • 1...d2
        • 2.Qe3#
      • 1...Bc3
        • 2.Qe3#
      • 1...Bb2!
    • 1.Qxd3+?
      • 1...Ke5
        • 2.Qd5#
        • 2.f4#
      • 1...Kxd3!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxf6#
      • 1...Kc3
        • 2.Qxf6#
      • 1...Ke5
        • 2.Qf4#
      • 1...fxg5
        • 2.Bg7#
      • 1...d2
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINP(b),S_FLIGHT::QAB1(A)
    • B(a);N_GUARD::QAB(A),XB(a)
  • Tries
    • Try
      • B(G);
      • Vars
        • B(a);N_GUARD::QAB(A),XB(a)
        • B(a);SBLOCK::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • B(G);
      • Threat
        • B(G),XP(f)
      • Vars
        • K(d);N_SPINP(b),S_FLIGHT::QAB1(A)
      • Refutation
        • P(f);XB(G)
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAB(A),XB(a)
      • Vars
        • P(b);::QAB1(A)
        • B(a);SBLOCK::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK,XP(b)
      • Refutation
        • K(d);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • QAB(A),XP(f)
    • Vars
      • K(d);S_FLIGHT::QAB(A),XP(f)
      • K(d);P_SPINP(e),S_FLIGHT::QAB1(A)
      • P(f);OGATEB,XQ(A)::B(G)
      • P(b);::QAB1(A)
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