MESON Chess Problem Database
Problem Display
PID: 50502 (2R5/2B5/2n5/p7/p1NkBp1n/P7/2bNQK2/1rR5 w - - 0 1)
Rudenko, Valentin Fedorovich
2nd Prize, Rokada, 1975
#2
9 + 8
| 3335 | Cyclone | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Kc3
- 2.Qd3#
- 1...Bb3
- 2.Bb6#
- 1...Sb4
- 2.Be5#
- 1...Se5
- 2.Bxe5#
- 1...Sa7
- 2.Be5#
- 1...Se7
- 2.Be5#
- 1...Sb8
- 2.Be5#
- 1...Sd8
- 2.Be5#
- 1...f3
- 2.Qe3#
- 1...Kc3
- Tries
- 1.Bb6+?
- 1...Kc3
- 2.Rxc2#
- 2.Qd3#
- 1...Rxb6!
- 1...Kc3
- 1.Rd8+?
- 1...Kc3
- 2.Rxc2#
- 2.Rd3#
- 2.Qd3#
- 1...Kc5
- 2.Rd5#
- 1...Sxd8!
- 1...Kc3
- 1.Qd3+?
- 1...Kc5
- 2.Qd5#
- 1...Bxd3!
- 1...Kc5
- 1.Bb6+?
- Keys
- 1.Sb2!
- threat
- 2.Qc4#
- 1...Kc3
- 2.Be5#
- 1...Kc5
- 2.Qc4#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Se5
- 2.Bb6#
- threat
- 1.Sb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- K(d);P_SPINB(b),S_FLIGHT::QAR1(C)
- B(b);S_CUTR(a)::B(H)
- S(h);N_GUARD::B(H)
- S(h);N_GUARD::B(H),XS(h)
- P(e);N_GUARD::QAB1(C)
- Tries
- Try
- B(H);CHECK
- Refutation
- R(a);XB(H)
- Try
- R(I);CHECK
- Vars
- K(d);S_FLIGHT::R1(I)
- Refutation
- S(h);XR(I)
- Try
- Q(C);CHECK
- Vars
- K(d);OGATE,S_FLIGHT::QAR1(C)
- Refutation
- B(b);XQ(C)
- Try
- Actual
- S(F);
- Threat
- QAR1(C)
- Vars
- K(d);P_SPINB(b),S_FLIGHT::B(H)
- K(d);P_SPINB(b),S_FLIGHT::QAR1(C)
- B(b);N_GUARD::QAR1(C)
- B(b);N_GUARD::QAR1(C),XB(b)
- S(h);SBLOCK::B(H)
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).