MESON Chess Problem Database
Problem Display
PID: 109806 (8/8/5K2/1Q6/3k1pp1/5np1/6B1/3N4 w - - 0 1)
Akerblom, Johan Axel
La Scacchiera, 1955
#2
4 + 5
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ke4
- 2.Qc4#
- 1...Se1
- 2.Qd5#
- 1...Sg1
- 2.Qd5#
- 1...Sd2
- 2.Qd5#
- 1...Sh2
- 2.Qd5#
- 1...Sh4
- 2.Qd5#
- 1...Se5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Ke4
- Tries
- 1.Kf5?
- 1...Se1
- 2.Qd5#
- 1...Sg1
- 2.Qd5#
- 1...Sd2
- 2.Qd5#
- 1...Sh2
- 2.Qd5#
- 1...Se5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Sh4+!
- 1...Se1
- 1.Ke6?
- threat
- 2.Qd5#
- 1...Ke4
- 2.Qc4#
- 2.Qd5#
- 1...Sg5+!
- threat
- 1.Ke7?
- 1...Se1
- 2.Qd5#
- 1...Sg1
- 2.Qd5#
- 1...Sd2
- 2.Qd5#
- 1...Sh2
- 2.Qd5#
- 1...Sh4
- 2.Qd5#
- 1...Se5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Ke4!
- 1...Se1
- 1.Kg7?
- 1...Se1
- 2.Qd5#
- 1...Sg1
- 2.Qd5#
- 1...Sd2
- 2.Qd5#
- 1...Sh2
- 2.Qd5#
- 1...Sh4
- 2.Qd5#
- 1...Se5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Ke4!
- 1...Se1
- 1.Bh1?
- 1...Ke4
- 2.Qc4#
- 1...Se1
- 2.Qd5#
- 1...Sg1
- 2.Qd5#
- 1...Sd2
- 2.Qd5#
- 1...Sh2
- 2.Qd5#
- 1...Sh4
- 2.Qd5#
- 1...Se5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...g2!
- 1...Ke4
- 1.Qc6?
- 1...Se1
- 2.Qd5#
- 2.Qc3#
- 1...Sg1
- 2.Qd5#
- 2.Qc3#
- 1...Sd2
- 2.Qd5#
- 2.Qc3#
- 1...Sh2
- 2.Qd5#
- 2.Qc3#
- 1...Sh4
- 2.Qd5#
- 2.Qc3#
- 1...Se5
- 2.Qd5#
- 2.Qc3#
- 1...Sg5
- 2.Qd5#
- 2.Qc3#
- 1...Kd3!
- 1...Se1
- 1.Qb3?
- 1...Ke4
- 2.Qc4#
- 1...Se1
- 2.Qd5#
- 2.Qc3#
- 1...Sg1
- 2.Qd5#
- 2.Qc3#
- 1...Sd2
- 2.Qd5#
- 2.Qc3#
- 1...Sh2
- 2.Qd5#
- 2.Qc3#
- 1...Sh4
- 2.Qd5#
- 2.Qc3#
- 1...Se5
- 2.Qd5#
- 2.Qc3#
- 1...Sg5
- 2.Qd5#
- 2.Qc3#
- 1...Kc5!
- 1...Ke4
- 1.Kf5?
- Keys
- 1.Bf1!
- threat
- 2.Qc4#
- 1...Ke4
- 2.Qd3#
- 1...Sd2
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- threat
- 1.Bf1!
This is a version of 150595
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- K(c);P-FLIGHT,P_SPINS(a)::QAR2(C)
- S(a);::QAR1(C)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- S(a);::QAR1(C)
- Refutation
- S(a);CHECK
- Try
- K(D);P-FLIGHT
- Threat
- QAR1(C)
- Refutation
- S(a);CHECK
- Try
- K(D);S_FLIGHT
- Vars
- S(a);::QAR1(C)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- K(D);S_FLIGHT
- Vars
- S(a);::QAR1(C)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- B(B);
- Vars
- K(c);P-FLIGHT,P_SPINS(a)::QAR2(C)
- S(a);::QAR1(C)
- Refutation
- P(b);
- Try
- Q(C);
- Refutation
- K(c);P-FLIGHT
- Try
- Q(C);
- Vars
- K(c);P-FLIGHT,P_SPINS(a)::QAR2(C)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- B(B);
- Threat
- QAR1(C)
- Vars
- K(c);P-FLIGHT::QAB1(C)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(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).