MESON Chess Problem Database
Problem Display
PID: 205540 (4R3/1K1kpQ2/8/2Pn4/8/8/8/8 w - - 0 1)
Schonberger, Tibor
L'Echiquier Marseillais, 1925
#2
4 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Qxe7#
- 1...Se3
- 2.Qxe7#
- 1...Sb4
- 2.Qxe7#
- 1...Sf4
- 2.Qxe7#
- 1...Sb6
- 2.Qxe7#
- 1...Sf6
- 2.Qxe7#
- 1...Sc7
- 2.Qxe7#
- 1...Sc3
- Tries
- 1.Rxe7+?
- 1...Kd8
- 2.Rd7#
- 2.Re8#
- 2.Qe8#
- 2.Qf8#
- 1...Sxe7!
- 1...Kd8
- 1.Qf5+?
- 1...e6
- 2.Qxe6#
- 1...Kxe8!
- 1...e6
- 1.Qf8?
- 1...Sc3
- 2.Rxe7#
- 2.Qxe7#
- 1...Se3
- 2.Rxe7#
- 2.Qxe7#
- 1...Sb4
- 2.Rxe7#
- 2.Qxe7#
- 1...Sf4
- 2.Rxe7#
- 2.Qxe7#
- 1...Sb6
- 2.Rxe7#
- 2.Qxe7#
- 1...Sf6
- 2.Rxe7#
- 2.Qxe7#
- 1...Sc7
- 2.Rxe7#
- 2.Qxe7#
- 1...e5
- 2.c6#
- 1...e6
- 2.Rd8#
- 2.c6#
- 1...Ke6!
- 1...Sc3
- 1.Rxe7+?
- Keys
- 1.Qg8!
- threat
- 2.Rd8#
- 1...e5
- 2.Qe6#
- 1...e6
- 2.Qxe6#
- threat
- 1.Qg8!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- S(a);N_GUARD::QAR1(C),XP(c)
- Tries
- Try
- R(D);CHECK,XP(c)
- Refutation
- S(a);P_SPINS(a),XR(D)
- Try
- Q(C);CHECK,N_PINP(c)
- Vars
- P(c);P_SPINP(c)::QAB1(C),XP(c)
- Refutation
- K(b);S_FLIGHT,XR(D)
- Try
- Q(C);N_PINP(c)
- Vars
- P(c);::P(A)
- Refutation
- K(b);P_SPINP(c),S_FLIGHT
- Try
- Actual
- Q(C);N_PINP(c)
- Threat
- R1(D)
- Vars
- P(c);::QAB1(C)
- P(c);::QAB1(C),XP(c)
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).