MESON Chess Problem Database

Problem Display
PID: 155310 (8/6q1/3pBpp1/3N4/1Pp1kP2/r3P2p/4Q2K/8 w - - 0 1)

Bottger, Horst

Der Tagesspiegel (Berlin), 2000

8/6q1/3pBpp1/3N4/1Pp1kP2/r3P2p/4Q2K/8

#2

7 + 8

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Sxf6#
    • 1...Qa7
      • 2.Sxf6#
    • 1...Qb7
      • 2.Sxf6#
    • 1...Qc7
      • 2.Sxf6#
    • 1...Qd7
      • 2.Sxf6#
    • 1...Qh7
      • 2.Sxf6#
    • 1...Qg8
      • 2.Sxf6#
    • 1...Ra1
      • 2.Sc3#
    • 1...Ra2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rxe3
      • 2.Qxe3#
    • 1...Ra4
      • 2.Sc3#
    • 1...Ra5
      • 2.Sc3#
    • 1...Ra6
      • 2.Sc3#
    • 1...Ra7
      • 2.Sc3#
    • 1...Ra8
      • 2.Sc3#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Qxc4#
      • 1...Rxe3+
        • 2.Qxe3#
      • 1...Qa7
        • 2.Sxf6#
      • 1...Qc7
        • 2.Sxf6#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Rd3
        • 2.Qf3#
      • 1...c3
        • 2.Qc4#
        • 2.Qc2#
      • 1...f5!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Qxc4#
      • 1...Kxd5
        • 2.Qf3#
      • 1...Qa7
        • 2.Sxf6#
      • 1...Qc7
        • 2.Sxf6#
      • 1...Ra2
        • 2.Sc3#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Rd3
        • 2.Qf3#
      • 1...c3
        • 2.Qc4#
      • 1...f5
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(h);N_GUARD::S(F),XP(f)
    • R(a);N_GUARD::S(F)
    • R(a);N_GUARD,P_PINQ(A)::S(F)
    • R(a);N_GUARD::S(F),XR(a)
    • R(a);OGATE,P_SPINR(a),XP(C)::QAR1(A),XR(a)
  • Tries
    • Try
      • K(B);P_SPINP(C),S_FLIGHT
      • Threat
        • QAR2(A),XP(c)
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::QAR1(A),XR(a)
        • Q(h);N_GUARD::S(F),XP(f)
        • R(a);N_GUARD::S(F),XR(a)
        • R(a);SBLOCK::QAB1(A)
      • Refutation
        • P(f);
  • Actual
    • B(G);
    • Threat
      • QAR2(A),XP(c)
    • Vars
      • K(d);S_FLIGHT,XS(F)::QAB(A)
      • Q(h);N_GUARD::S(F),XP(f)
      • R(a);N_GUARD,P_PINQ(A)::S(F)
      • R(a);N_GUARD::S(F),XR(a)
      • R(a);SBLOCK::QAB1(A)
      • P(c);::QAR2(A)
      • P(f);SBLOCK::B(G)
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