MESON Chess Problem Database
Problem Display
PID: 6457 (4RK2/4Nn2/1rp1Q3/qp4p1/Rb3kBp/2Pp3r/8/4B3 w - - 0 1)
Schiffmann, Israel Abraham
Skakbladet, 1929
#2
8 + 11
| 1397 | Faszinierendes Schachproblem | 1963 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Rxb4#
- 1...Qa7
- 2.Rxb4#
- 1...Qa8
- 2.Rxb4#
- 1...Re3
- 2.Qf5#
- 1...Sd6
- 2.Sg6#
- 1...c5
- 2.Sd5#
- 2.Sg6#
- 1...Qa6
- Tries
- 1.Kxf7?
- threat
- 2.Sg6#
- 1...Qa7
- 2.Rxb4#
- 1...Rb7!
- threat
- 1.Qc4+?
- 1...Ke3
- 2.Qd4#
- 1...Ke5
- 2.Qd4#
- 1...bxc4!
- 1...Ke3
- 1.Qf6+?
- 1...Ke3
- 2.Qd4#
- 1...Ke4
- 2.Qd4#
- 1...Kxg4!
- 1...Ke3
- 1.Kxf7?
- Keys
- 1.Qd7!
- threat
- 2.Qd4#
- 1...Ke3
- 2.Qd4#
- 1...Ke4
- 2.Qd4#
- 1...Ke5
- 2.Qd4#
- 1...Re3
- 2.Qf5#
- 1...Sd6
- 2.Sg6#
- 1...c5
- 2.Sd5#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(f);N_GUARD::R(C),XB(c)
- Q(f);N_GUARD,P_PINR(G)::R(C),XB(c)
- R(b);SBLOCK::QAR1(E)
- S(k);N_PINS(F)::S(F)
- Tries
- Try
- K(H);N_SPINS(F),P-FLIGHT,XS(k)
- Threat
- S(F)
- Vars
- Q(f);N_GUARD,P_PINS(F)::R(C),XB(c)
- Refutation
- R(i);P_PINS(F)
- Try
- Q(E);CHECK,N_PINB(c)
- Vars
- K(d);S_FLIGHT::QAB1(E)
- Refutation
- P(g);XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(d);N_SPINB(c),S_FLIGHT::QAB1(E)
- K(d);P-FLIGHT::QAR1(E)
- Refutation
- K(d);P-FLIGHT,XB(D)
- Try
- Actual
- Q(E);
- Threat
- QAR2(E)
- Vars
- K(d);N_SPINB(c),S_FLIGHT::QAB1(E)
- K(d);P-FLIGHT::QAR1(E)
- R(b);SBLOCK::QAR1(E)
- S(k);N_PINS(F)::S(F)
- P(j);N_PINS(F)::S(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).