MESON Chess Problem Database
Problem Display
PID: 221747 (8/2p4K/Rb3kp1/6Np/3N3n/1n4QB/5r2/B4R2 w - - 0 1)
Hannelius, Jan Ingvar
Suomen Shakki, 1953
#2
8 + 8
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Sf5#
- 1...Sc5
- 2.Sc6#
- 1...Sd2
- Tries
- 1.Sdf3+?
- 1...Rb2
- 2.Qe5#
- 1...Sxa1
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Ke7!
- 1...Rb2
- 1.Sc6+?
- 1...Sxa1
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Bd4!
- 1...Sxa1
- 1.Re1?
- threat
- 2.Re6#
- 2.Qe5#
- 1...Rf4
- 2.Re6#
- 1...Rf5
- 2.Re6#
- 1...Sc5
- 2.Sc2#
- 2.Qe5#
- 1...Sf3
- 2.Re6#
- 2.Qf4#
- 1...Sf5
- 2.Re6#
- 1...Re2!
- threat
- 1.Qd6+?
- 1...Kxg5
- 2.Se6#
- 1...cxd6!
- 1...Kxg5
- 1.Sdf3+?
- Keys
- 1.Qxc7!
- threat
- 2.Se4#
- 1...Kxg5
- 2.Se6#
- 1...Sd2
- 2.Sdf3#
- 1...Sc5
- 2.Sde6#
- threat
- 1.Qxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::B(A)+S(E)
- Tries
- Try
- S(E);CHECK,N_PINR(a)
- Vars
- R(a);P_SPINR(a)::QAB1(C)
- S(b);XB(A)::QAB1(C)
- S(b);P_SPINS(b)::QAB1(C)
- Refutation
- K(f);N_SPINB(e),S_FLIGHT
- Try
- S(E);CHECK,N_PINB(e)
- Vars
- S(b);XB(A)::QAB1(C)
- S(b);P_SPINS(b)::QAB1(C)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(B);N_PINR(a)
- Threat
- DUALS(2)
- Vars
- R(a);::R1(B)
- S(c);::R1(B)
- Refutation
- R(a);
- Try
- Q(C);CHECK,N_PINB(e)
- Vars
- K(f);N_SPINR(a),S_FLIGHT,XS(F)::S(E)
- Refutation
- P(h);XQ(C)
- Try
- Actual
- Q(C);XP(h)
- Threat
- S(F)
- Vars
- K(f);N_SPINB(e),N_SPINR(a),S_FLIGHT,XS(F)::S(E)
- S(b);N_GUARD::B(A)+S(E)
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).