Meson Chess Problem Database

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Problem Display

PID: 9419 (8/p7/Qbp1Bp2/8/2N1k3/P7/2K1N3/6B1 w - - 0 1)

van Beek, Huibrecht

1st HM., Tijdschrift vd NSB, 1902

8/p7/Qbp1Bp2/8/2N1k3/P7/2K1N3/6B1

#2

7 + 5

SOLUTION

SOUND
Sets
- 1...Bxg1
  - 2.Qxc6#
- 1...Bf2
  - 2.Qxc6#
- 1...Be3
  - 2.Qxc6#
- 1...Bd4
  - 2.Qxc6#
- 1...Ba5
  - 2.Qxc6#
- 1...Bc5
  - 2.Qxc6#
- 1...Bc7
  - 2.Qxc6#
- 1...Bd8
  - 2.Qxc6#
- 1...c5
  - 2.Qb7#
Tries
- 1.Bd4?
  - threat
    - 2.Sd2#
  - 1...Bxd4
    - 2.Qxc6#
  - 1...Ba5
    - 2.Qxc6#
  - 1...Kf3!
- 1.Bg4?
  - 1...Kd5
    - 2.Sc3#
  - 1...Bxg1
    - 2.Qxc6#
  - 1...Bf2
    - 2.Qxc6#
  - 1...Be3
    - 2.Qxc6#
  - 1...Bd4
    - 2.Qxc6#
  - 1...Ba5
    - 2.Qxc6#
  - 1...Bc5
    - 2.Qxc6#
  - 1...Bc7
    - 2.Qxc6#
  - 1...Bd8
    - 2.Qxc6#
  - 1...c5
    - 2.Qb7#
  - 1...f5!
- 1.Bd7?
  - 1...Kd5
    - 2.Sc3#
  - 1...Bxg1
    - 2.Qxc6#
  - 1...f5
    - 2.Bxc6#
  - 1...Bf2
    - 2.Qxc6#
  - 1...Be3
    - 2.Qxc6#
  - 1...Bd4
    - 2.Qxc6#
  - 1...Ba5
    - 2.Qxc6#
  - 1...Bc5
    - 2.Qxc6#
  - 1...Bc7
    - 2.Qxc6#
  - 1...Bd8
    - 2.Qxc6#
  - 1...c5
    - 2.Qb7#
  - 1...Kf3!
- 1.Qa4?
  - threat
    - 2.Qxc6#
  - 1...c5
    - 2.Qc6#
  - 1...Kf3!
Keys
- 1.Bh3!
  - 1...Kf3
    - 2.Sd2#
  - 1...Kd5
    - 2.Sc3#
  - 1...Bxg1
    - 2.Qxc6#
  - 1...f5
    - 2.Bg2#
  - 1...Bf2
    - 2.Qxc6#
  - 1...Be3
    - 2.Qxc6#
  - 1...Bd4
    - 2.Qxc6#
  - 1...Ba5
    - 2.Qxc6#
  - 1...Bc5
    - 2.Qxc6#
  - 1...Bc7
    - 2.Qxc6#
  - 1...Bd8
    - 2.Qxc6#
  - 1...c5
    - 2.Qb7#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
Sets
- B(b);OGATE,XB(A)::QAB(F),XP(c)
- B(b);OGATE::QAB(F),XP(c)
- P(c);OGATEB::QAB(F)
Tries
- Try
  - B(A);
  - Threat
    - S(E)
  - Vars
    - B(b);OGATE,XB(A)::QAB(F),XP(c)
    - B(b);OGATE::QAB(F),XP(c)
  - Refutation
    - K(a);S_FLIGHT
- Try
  - B(G);
  - Vars
    - K(a);S_FLIGHT::S(C)
    - B(b);OGATE,XB(A)::QAB(F),XP(c)
    - B(b);OGATE::QAB(F),XP(c)
    - P(c);OGATEB::QAB(F)
  - Refutation
    - P(d);
- Try
  - B(G);
  - Vars
    - K(a);S_FLIGHT::S(C)
    - B(b);OGATE,XB(A)::QAB(F),XP(c)
    - P(d);SBLOCK::B(G),XP(c)
    - B(b);OGATE::QAB(F),XP(c)
    - P(c);OGATEB::QAB(F)
  - Refutation
    - K(a);S_FLIGHT
- Try
  - Q(F);
  - Threat
    - QAB(F),XP(c)
  - Vars
    - P(c);::QAB(F)
  - Refutation
    - K(a);S_FLIGHT
Actual
- B(G);
- Vars
  - K(a);S_FLIGHT::S(E)
  - K(a);S_FLIGHT::S(C)
  - B(b);OGATE,XB(A)::QAB(F),XP(c)
  - P(d);SBLOCK::B(G)
  - B(b);OGATE::QAB(F),XP(c)
  - P(c);OGATEB::QAB(F)

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).