Meson Chess Problem Database

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Problem Display

PID: 72644 (5N2/1Q1B2p1/3B1p1b/3Np1kr/3p3p/2p4K/Rp6/8 w - - 0 1)

Lindemann, W

Tijdschrift vd KNSB, 1936

5N2/1Q1B2p1/3B1p1b/3Np1kr/3p3p/2p4K/Rp6/8

#2

7 + 10

SOLUTION

SOUND
Sets
- 1...b1Q
  - 2.Rg2#
- 1...b1S
  - 2.Rg2#
- 1...b1B
  - 2.Rg2#
- 1...b1R
  - 2.Rg2#
- 1...e4
  - 2.Bf4#
- 1...f5
  - 2.Be7#
- 1...g6
  - 2.Sh7#
Tries
- 1.Se6+?
  - 1...Kf5
    - 2.Se7#
  - 1...Kg6!
- 1.Qxb2?
  - threat
    - 2.Qc1#
    - 2.Qg2#
  - 1...c2
    - 2.Qc1#
  - 1...d3
    - 2.Qg2#
  - 1...e4
    - 2.Bf4#
    - 2.Qg2#
  - 1...f5
    - 2.Be7#
    - 2.Qg2#
  - 1...cxb2!
- 1.Qb6?
  - 1...b1Q
    - 2.Rg2#
  - 1...b1S
    - 2.Rg2#
  - 1...b1B
    - 2.Rg2#
  - 1...b1R
    - 2.Rg2#
  - 1...d3
    - 2.Qg1#
    - 2.Qe3#
  - 1...e4
    - 2.Bf4#
  - 1...f5
    - 2.Be7#
    - 2.Qd8#
  - 1...g6
    - 2.Sh7#
  - 1...c2!
- 1.Qa7?
  - 1...b1Q
    - 2.Rg2#
  - 1...b1S
    - 2.Rg2#
  - 1...b1B
    - 2.Rg2#
  - 1...b1R
    - 2.Rg2#
  - 1...d3
    - 2.Qg1#
    - 2.Qe3#
  - 1...e4
    - 2.Bf4#
  - 1...f5
    - 2.Be7#
  - 1...g6
    - 2.Sh7#
  - 1...c2!
Keys
- 1.Qb4!
  - 1...b1Q
    - 2.Rg2#
  - 1...b1S
    - 2.Rg2#
  - 1...b1B
    - 2.Rg2#
  - 1...b1R
    - 2.Rg2#
  - 1...c2
    - 2.Qd2#
  - 1...d3
    - 2.Qg4#
  - 1...e4
    - 2.Bf4#
  - 1...f5
    - 2.Be7#
  - 1...g6
    - 2.Sh7#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
Sets
- P(a);OGATE::R(A)
- P(e);OGATE::B(D)
- P(h);OGATEB::B(D)
- P(j);SBLOCK::S(G)
Tries
- Try
  - S(G);CHECK
  - Vars
    - K(f);P-FLIGHT::S(C)
  - Refutation
    - K(f);P-FLIGHT
- Try
  - Q(E);XP(a)
  - Threat
    - DUALS(2)
  - Vars
    - P(b);::QAB(E)
    - P(c);::QAR(E)
  - Refutation
    - P(b);XQ(E)
- Try
  - Q(E);
  - Vars
    - P(a);OGATE::R(A)
    - P(e);OGATE::B(D)
    - P(j);SBLOCK::S(G)
  - Refutation
    - P(b);
- Try
  - Q(E);
  - Vars
    - P(a);OGATE::R(A)
    - P(e);OGATE::B(D)
    - P(h);OGATEB::B(D)
    - P(j);SBLOCK::S(G)
  - Refutation
    - P(b);
Actual
- Q(E);
- Vars
  - P(a);OGATE::R(A)
  - P(b);OGATE::QAB(E)
  - P(c);OGATE::QAR1(E)
  - P(e);OGATE::B(D)
  - P(h);OGATEB::B(D)
  - P(j);SBLOCK::S(G)

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).