MESON Chess Problem Database
Problem Display
PID: 238030 (3r1R2/b5pp/r1Q4n/1N1NkP2/4P3/q1p1pPK1/b2P4/8 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Hlas l'udu, 1981
#2
9 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra4
- 2.Qe6#
- 1...Ra5
- 2.Qe6#
- 1...Rb6
- 2.d4#
- 1...Bb6
- 2.Qe6#
- 1...Bb8
- 2.d4#
- 1...Sxf5+
- 2.Rxf5#
- 1...Ra4
- Tries
- 1.Sdxc3?
- threat
- 2.f4#
- 1...Sxf5+
- 2.Rxf5#
- 1...g5!
- threat
- 1.Sb4?
- threat
- 2.f4#
- 1...Sxf5+
- 2.Rxf5#
- 1...Rxc6
- 2.Sxc6#
- 1...Rd5
- 2.Re8#
- 1...Bd5
- 2.Sd3#
- 1...g5!
- threat
- 1.Re8+?
- 1...Qe7
- 2.Rxe7#
- 1...Rxe8!
- 1...Qe7
- 1.Qxc3+?
- 1...Bd4
- 2.Qxd4#
- 1...Qxc3!
- 1...Bd4
- 1.d3?
- threat
- 2.f4#
- 1...Sxf5+
- 2.Rxf5#
- 1...g5!
- threat
- 1.Sdxc3?
- Keys
- 1.Sb6!
- threat
- 2.f4#
- 1...Sxf5+
- 2.Rxf5#
- 1...g5
- 2.Qf6#
- 1...Rd5
- 2.Qe6#
- 1...Bd5
- 2.d4#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(f);N_GUARD::QAR1(H)
- R(f);S_CUTB(h)::P(A)
- B(h);S_CUTR(f)::QAR1(H)
- B(h);N_GUARD::P(A)
- S(g);CHECK,OGATE,XP(G)::R1(I),XS(g)
- Tries
- Try
- S(F);XP(c)
- Threat
- P(B)
- Vars
- S(g);CHECK,OGATE,XP(G)::R1(I),XS(g)
- Refutation
- P(i);
- Try
- S(F);
- Threat
- P(B)
- Vars
- S(g);CHECK,OGATE,XP(G)::R1(I),XS(g)
- R(f);XQ(H)::S(F),XR(f)
- R(k);N_GUARD,S_CUTB(a)::R(I)
- B(a);S_CUTR(k)::S(F)
- Refutation
- P(i);
- Try
- R(I);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::R(I),XQ(b)
- Refutation
- R(k);XR(I)
- Try
- Q(H);CHECK,XP(c)
- Vars
- B(h);N_GUARD,P_SPINB(h)::QAB1(H),XB(h)
- Refutation
- Q(b);XQ(H)
- Try
- P(A);
- Threat
- P(B)
- Vars
- S(g);CHECK,OGATE,XP(G)::R1(I),XS(g)
- Refutation
- P(i);
- Try
- Actual
- S(F);
- Threat
- P(B)
- Vars
- S(g);CHECK,OGATE,XP(G)::R1(I),XS(g)
- P(i);N_GUARD::QAB1(H)
- R(k);S_CUTB(a)::QAR1(H)
- B(a);S_CUTR(k)::P(A)
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).