MESON Chess Problem Database
Problem Display
PID: 173711 (8/B1r1b3/NQ6/8/8/2k5/3RB1n1/q3nN1K w - - 0 1)
Boros, Sandor
Uj Nemezdek, 1926
#2
7 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Qxb2#
- 1...Qd1
- 2.Qb2#
- 1...Qa4
- 2.Qb2#
- 1...Qa5
- 2.Qb2#
- 1...Qxa6
- 2.Qb2#
- 1...Rc5
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Bh4
- 2.Qb4#
- 1...Bg5
- 2.Qb4#
- 1...Bf6
- 2.Qb4#
- 1...Bd8
- 2.Qb4#
- 1...Qb2
- Tries
- 1.Qe3+?
- 1...Sd3
- 2.Qxd3#
- 1...Sxe3!
- 1...Sd3
- 1.Qe3+?
- Keys
- 1.Qb5!
- threat
- 2.Bd4#
- 1...Rxa7
- 2.Qc4#
- 1...Bb4
- 2.Qxb4#
- 1...Qa4
- 2.Qb2#
- 1...Rc4
- 2.Qxc4#
- 1...Rc5
- 2.Qb4#
- 1...Rd7
- 2.Qc4#
- 1...Bc5
- 2.Qc4#
- 1...Bf6
- 2.Qb4#
- 1...Sc2
- 2.Rd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::QAB1(F),XQ(a)
- Q(a);N_GUARD::QAB1(F)
- Q(a);N_GUARD,XS(E)::QAB1(F)
- R(e);S_CUTB(f)::QAB1(F)
- B(f);N_GUARD::QAB1(F),XB(f)
- B(f);N_GUARD::QAB1(F)
- Tries
- Try
- Q(F);CHECK
- Vars
- S(b);N_GUARD,P_PINS(A),P_SPINS(b)::QAR1(F),XS(b)
- Refutation
- S(c);XQ(F)
- Try
- Actual
- Q(F);
- Threat
- B(G)
- Vars
- R(e);N_GUARD,XB(G)::QAR1(F)
- B(f);N_GUARD::QAB1(F),XB(f)
- Q(a);N_GUARD::QAB1(F)
- R(e);N_GUARD::QAR1(F),XR(e)
- R(e);S_CUTB(f)::QAB1(F)
- R(e);N_GUARD::QAR1(F)
- B(f);S_CUTR(e)::QAR1(F)
- B(f);N_GUARD::QAB1(F)
- S(b);N_GUARD,P_PINS(A),SBLOCK::R1(C)
- S(b);N_GUARD,P_PINS(A)::QAR1(F),XS(b)
- S(b);N_GUARD,P_PINS(A)::QAR1(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).