MESON Chess Problem Database
Problem Display
PID: 269209 (3R4/2K5/8/1pk1p3/4P3/2pP4/2P4B/8 w - - 0 1)
Kalinin, Aleksandr Konstantinovich
Leninskie Iskra, 1929
#2
6 + 4
| 9939 | 64 Shakhmatnoe obozrenie | 2023 |
| 5454 | Near Snap | 2023 |
SOLUTION
- SOUND
- Sets
- 1...b4
- 2.Rd5#
- 1...b4
- Tries
- 1.Kb7?
- 1...b4
- 2.Rd5#
- 1...Kb4!
- 1...b4
- 1.Bg3?
- 1...b4
- 2.Rd5#
- 1...Kb4!
- 1...b4
- 1.Bxe5?
- 1...b4
- 2.Rd5#
- 1...Kb4!
- 1...b4
- 1.Rd6?
- 1...b4
- 2.Rd5#
- 1...Kb4!
- 1...b4
- 1.Rd7?
- 1...b4
- 2.Rd5#
- 1...Kb4!
- 1...b4
- 1.Rb8?
- 1...Kd4
- 2.Bg1#
- 1...b4
- 2.Bg1#
- 1...Kb4!
- 1...Kd4
- 1.Kb7?
- Keys
- 1.Rd4!
- 1...Kxd4
- 2.Bg1#
- 1...exd4
- 2.Bd6#
- 1...b4
- 2.Rd5#
- 1...Kxd4
- 1.Rd4!
Anticipated by 194158(1917)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(b);SBLOCK::R1(F)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- P(b);SBLOCK::R1(F)
- Refutation
- K(c);S_FLIGHT
- Try
- B(B);
- Vars
- P(b);SBLOCK::R1(F)
- Refutation
- K(c);S_FLIGHT
- Try
- B(B);XP(d)
- Vars
- P(b);SBLOCK::R1(F)
- Refutation
- K(c);S_FLIGHT
- Try
- R(F);
- Vars
- P(b);SBLOCK::R1(F)
- Refutation
- K(c);S_FLIGHT
- Try
- R(F);
- Vars
- P(b);SBLOCK::R1(F)
- Refutation
- K(c);S_FLIGHT
- Try
- R(F);
- Vars
- K(c);N_GUARD,S_FLIGHT::B(B)
- P(b);::B(B)
- Refutation
- K(c);P_SPINP(b),S_FLIGHT
- Try
- Actual
- R(F);
- Vars
- K(c);OGATEB,S_FLIGHT,XR(F)::B(B)
- P(d);OGATE,SBLOCK,XR(F)::B(B)
- P(b);SBLOCK::R1(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).