Meson Chess Problem Database

Home
Latest Additions
- #2
- #3
- #4
- #5
- Stats
Books
- All composers (SLOW)
- By initial letter
Magazines
- PID
- General
- Matrix
- All sources/quoters (SLOW)
- By initial letter
- Awards
- Composers
- Decades
- Quoters
- Sizes
- Soundness
- Sources
- Stipulations
- Years
Contact
Back to BDS Website

Problem Display

PID: 223314 (4N3/8/2p2N2/6bR/P1bk2Pp/4p2P/1K6/Q5B1 w - - 0 1)

Keidanski, Theodore Hermann

2nd Prize, Illustrated Family Journal, 1886

4N3/8/2p2N2/6bR/P1bk2Pp/4p2P/1K6/Q5B1

#2

9 + 6

6490	yacpdb	2020

SOLUTION

SOUND
Sets
- 1...Kd3
  - 2.Qd1#
- 1...Bf4
  - 2.Kc2#
- 1...Bh6
  - 2.Kc2#
- 1...c5
  - 2.Kc2#
Tries
- 1.Ka3+?
  - 1...Kc5
    - 2.Bxe3#
  - 1...Kd3!
- 1.Qc1?
  - 1...Kd3
    - 2.Qd1#
  - 1...Ke5
    - 2.Qxe3#
  - 1...Bxf6
    - 2.Qxe3#
  - 1...Bf1
    - 2.Qc3#
  - 1...Ba2
    - 2.Qc3#
  - 1...Be2
    - 2.Qc3#
  - 1...Bb3
    - 2.Qc3#
  - 1...Bd3
    - 2.Qc3#
  - 1...Bb5
    - 2.Qc3#
  - 1...Bd5
    - 2.Qc3#
  - 1...Ba6
    - 2.Qc3#
  - 1...Be6
    - 2.Qc3#
  - 1...Bf7
    - 2.Qc3#
  - 1...Bg8
    - 2.Qc3#
  - 1...Bf4
    - 2.Qc3#
  - 1...Bh6
    - 2.Qc3#
  - 1...c5
    - 2.Qc3#
  - 1...Kc5!
- 1.Qa3?
  - 1...Ke5
    - 2.Qd6#
    - 2.Qxe3#
  - 1...Bxf6
    - 2.Qxe3#
  - 1...Bf1
    - 2.Qc3#
  - 1...Ba2
    - 2.Qc3#
  - 1...Be2
    - 2.Qc3#
  - 1...Bd3
    - 2.Qc3#
  - 1...Bb5
    - 2.Qc3#
  - 1...Bd5
    - 2.Qc3#
  - 1...Ba6
    - 2.Qc3#
  - 1...Be6
    - 2.Qc3#
  - 1...Bf7
    - 2.Qc3#
  - 1...Bg8
    - 2.Qc3#
  - 1...Bf4
    - 2.Qc3#
  - 1...Bh6
    - 2.Qc3#
  - 1...c5
    - 2.Qc3#
  - 1...Bb3!
Keys
- 1.Qe1!
  - 1...Kd3
    - 2.Qd1#
  - 1...Kc5
    - 2.Bxe3#
  - 1...Ke5
    - 2.Qxe3#
  - 1...Bxf6
    - 2.Qxe3#
  - 1...Bf1
    - 2.Qc3#
  - 1...Ba2
    - 2.Qc3#
  - 1...Be2
    - 2.Qc3#
  - 1...Bb3
    - 2.Qc3#
  - 1...Bb5
    - 2.Qc3#
  - 1...Bd5
    - 2.Qc3#
  - 1...Ba6
    - 2.Qc3#
  - 1...Be6
    - 2.Qc3#
  - 1...Bf7
    - 2.Qc3#
  - 1...Bg8
    - 2.Qc3#
  - 1...Bd3
    - 2.Qc3#
  - 1...Bf4
    - 2.Qc3#
  - 1...Bh6
    - 2.Qc3#
  - 1...c5
    - 2.Qc3#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 14
- REMOVED MATES = 0
Sets
- K(c);N_SPINP(a),P-FLIGHT::QAR2(A)
- B(e);::QAB(A)+K(C)
- P(f);SBLOCK::QAB(A)+K(C)
Tries
- Try
  - K(C);CHECK,S_FLIGHT
  - Vars
    - K(c);P_SPINB(e),S_FLIGHT::B(B),XP(a)
  - Refutation
    - K(c);N_SPINP(a),P-FLIGHT
- Try
  - Q(A);
  - Vars
    - K(c);N_SPINP(a),P-FLIGHT::QAR2(A)
    - K(c);N_SPINP(a),P_SPINB(e),S_FLIGHT::QAR2(A),XP(a)
    - B(e);N_GUARD,XS(H)::QAB1(A),XP(a)
    - B(b);::QAB1(A)
    - B(e);::QAB1(A)
    - P(f);SBLOCK::QAB1(A)
  - Refutation
    - K(c);P_SPINB(b),S_FLIGHT
- Try
  - Q(A);
  - Vars
    - B(e);N_GUARD,XS(H)::QAB1(A),XP(a)
    - B(b);::QAB1(A)
    - B(e);::QAB1(A)
    - P(f);SBLOCK::QAB1(A)
  - Refutation
    - B(b);
Actual
- Q(A);
- Vars
  - K(c);N_SPINP(a),P-FLIGHT::QAR2(A)
  - K(c);P_SPINB(e),S_FLIGHT::B(B),XP(a)
  - K(c);P_SPINB(e),S_FLIGHT::QAR2(A),XP(a)
  - B(e);N_GUARD,XS(H)::QAB1(A),XP(a)
  - B(b);::QAB1(A)
  - B(e);::QAB1(A)
  - P(f);SBLOCK::QAB1(A)

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).