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Problem Display

PID: 270753 (K1N5/3p2q1/B2B4/p6p/kp2P3/p2P1P2/P1P5/3N2b1 w - - 0 1)

van der Straat, Frits P

Probleemblad, 1951

K1N5/3p2q1/B2B4/p6p/kp2P3/p2P1P2/P1P5/3N2b1

#4

10 + 8

SOLUTION

SOUND
Keys
- 1.c4!
  - threat
    - 2.Bb5#
  - 1...bxc4 ep
    - 2.d4
      - threat
        3.Sxc3#
        3.Sb6#
      - 2...Qxd4
        3.Sb6+
        3...Qxb6
        4.Sxc3#
      - 2...Bxd4
        3.Sxc3+
        3...Bxc3
        4.Sb6#
  - 1...Qe5
    - 2.f4
      - threat
        3.fxe5
        threat
        4.Bb5#
      - 2...Qxe4+
        3.dxe4
        threat
        4.Bb5#
      - 2...Qd5+
        3.exd5
        threat
        4.Bb5#
      - 2...Qc5
        3.Bxc5
        threat
        4.Sb6#
        4.Bb5#
      - 2...Qf5
        3.exf5
        threat
        4.Bb5#
      - 2...Qg5
        3.fxg5
        threat
        4.Bb5#
      - 2...b3
        3.Sc3+
        3...Qxc3
        4.Bb5#
        3.Bb5+
        3...Qxb5
        4.Sc3#
  - 1...Qg5
    - 2.f4
      - threat
        3.fxg5
        threat
        4.Bb5#
      - 2...Qd5+
        3.exd5
        threat
        4.Bb5#
      - 2...Qc5
        3.Bxc5
        threat
        4.Sb6#
        4.Bb5#
      - 2...Qe5
        3.fxe5
        threat
        4.Bb5#
      - 2...Qf5
        3.exf5
        threat
        4.Bb5#

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