MESON Chess Problem Database

Problem Display
PID: 187032 (4R3/3pKp2/1NP3PN/2p1k3/5p1p/2PP3P/1P2p2P/Q7 w - - 0 1)

Rothwell, Stephen

Landeszeitung fur die Luneburger Heide, 2001

(First published on Sat Apr 7 2001)

4R3/3pKp2/1NP3PN/2p1k3/5p1p/2PP3P/1P2p2P/Q7

#2

12 + 7

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...e1Q
      • 2.Qxe1#
    • 1...e1S
      • 2.Qxe1#
    • 1...e1B
      • 2.Qxe1#
    • 1...e1R
      • 2.Qxe1#
    • 1...d5
      • 2.Sd7#
    • 1...d6
      • 2.Kxf7#
    • 1...f5
      • 2.Sf7#
    • 1...f6
      • 2.Kxd7#
  • Tries
    • 1.Qh1?
      • threat
        • 2.Sc4#
        • 2.Sxd7#
        • 2.Qe4#
        • 2.Qd5#
      • 1...dxc6
        • 2.Sc4#
        • 2.Sd7#
        • 2.Qe4#
      • 1...e1Q
        • 2.Sc4#
        • 2.Sxd7#
        • 2.Qd5#
        • 2.Qxe1#
      • 1...e1R
        • 2.Sc4#
        • 2.Sxd7#
        • 2.Qd5#
        • 2.Qxe1#
      • 1...c4
        • 2.Sxc4#
        • 2.Sxd7#
        • 2.Qe4#
        • 2.Qd5#
        • 2.d4#
      • 1...d5
        • 2.Sd7#
        • 2.Qxd5#
      • 1...d6
        • 2.Kxf7#
        • 2.Sc4#
        • 2.Sd7#
        • 2.Qe4#
        • 2.Qd5#
      • 1...f5
        • 2.Sc4#
        • 2.Sxd7#
        • 2.Sf7#
        • 2.Qd5#
      • 1...f3!
  • Keys
    • 1.Qg1!
      • 1...dxc6
        • 2.Qxc5#
      • 1...fxg6
        • 2.Qg5#
      • 1...f3
        • 2.Qe3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...c4
        • 2.Qd4#
      • 1...d5
        • 2.Sd7#
      • 1...d6
        • 2.Kxf7#
      • 1...f5
        • 2.Sf7#
      • 1...f6
        • 2.Kxd7#

This is a version of 187031

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAR(A),XQ(a)
    • P(a);OGATEB::QAR(A),XS(a)
    • P(a);OGATEB::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
    • P(f);SBLOCK::S(G)
    • P(f);SBLOCK::R(L)+K(K),XP(g)
    • P(g);SBLOCK::S(J)
    • P(g);SBLOCK::R(L)+K(K),XP(f)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(4)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • P(f);N_GUARD,XP(H)::QAR2(A),XP(d)
      • P(g);N_GUARD,XP(I)::QAR2(A)
      • P(b);N_GUARD::QAR2(A)
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XS(a)
      • P(a);OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XR(a)
      • P(d);N_GUARD::QAB1(A)
      • P(f);SBLOCK::S(G)
      • P(f);SBLOCK::R(L)+K(K),XP(g)
      • P(g);SBLOCK::S(J)
      • P(g);SBLOCK::R(L)+K(K),XP(f)
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