MESON Chess Problem Database
Problem Display
PID: 238013 (B1Q5/b5n1/6r1/4N1pq/1rp1p1p1/2P1k1P1/8/3RKR2 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Mat, 1975
#2
8 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Sxg4#
- 1...Qh2
- 2.Sxg4#
- 1...Qh6
- 2.Sxg4#
- 1...Qh7
- 2.Sxg4#
- 1...Qh8
- 2.Sxg4#
- 1...Rb1
- 2.Sxc4#
- 1...Rb2
- 2.Sxc4#
- 1...Rb3
- 2.Sxc4#
- 1...Rb5
- 2.Sxc4#
- 1...Rbb6
- 2.Sxc4#
- 2.Qc5#
- 1...Rb7
- 2.Sxc4#
- 1...Rb8
- 2.Sxc4#
- 1...Rgb6
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Bb8
- 2.Qc5#
- 1...Qh1
- Tries
- 1.Rd2?
- threat
- 2.Re2#
- 1...Qh2
- 2.Sxg4#
- 1...Rb2
- 2.Sxc4#
- 1...Rb1+!
- threat
- 1.Rf2?
- threat
- 2.Re2#
- 1...Qh2
- 2.Sxg4#
- 1...Rb2
- 2.Sxc4#
- 1...Qh1+!
- threat
- 1.Qxg4?
- threat
- 2.Qxe4#
- 1...Qxg4
- 2.Sxg4#
- 1...Qh1
- 2.Qe2#
- 1...Qh4
- 2.Qe2#
- 1...Rb7
- 2.Sxc4#
- 1...Rc6!
- threat
- 1.Qf5?
- threat
- 2.Qxe4#
- 2.Qf2#
- 1...Qh1
- 2.Sxg4#
- 2.Qf2#
- 1...Qh2
- 2.Sxg4#
- 2.Qxe4#
- 1...Rb2
- 2.Sxc4#
- 2.Qxe4#
- 1...Rb7
- 2.Sxc4#
- 2.Qf2#
- 1...Rc6
- 2.Qf2#
- 1...Rf6
- 2.Qxe4#
- 1...Sxf5!
- threat
- 1.Qb7?
- threat
- 2.Qxe4#
- 1...Rxb7
- 2.Sxc4#
- 1...Qh1
- 2.Sxg4#
- 1...Rc6!
- threat
- 1.Qd7?
- threat
- 2.Qd2#
- 1...Qh2
- 2.Sxg4#
- 1...Rb2
- 2.Sxc4#
- 1...Bd4
- 2.Qxd4#
- 1...Rd6!
- threat
- 1.Qc6?
- threat
- 2.Qxe4#
- 1...Qh1
- 2.Sxg4#
- 1...Rb7
- 2.Sxc4#
- 1...Rxc6!
- threat
- 1.Qd8?
- threat
- 2.Qd2#
- 1...Qh2
- 2.Sxg4#
- 1...Rb2
- 2.Sxc4#
- 1...Bd4
- 2.Qxd4#
- 1...Rd6!
- threat
- 1.cxb4?
- threat
- 2.Sxc4#
- 1...c3
- 2.Sc4#
- 2.Qxc3#
- 1...Rc6!
- threat
- 1.Rd2?
- Keys
- 1.Qxc4!
- threat
- 2.Qe2#
- 1...Rxc4
- 2.Sxc4#
- 1...Qh2
- 2.Sxg4#
- 1...Rb2
- 2.Qxe4#
- threat
- 1.Qxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(g);N_GUARD,P_PINR(C)::S(F),XP(e)
- Q(g);N_GUARD::S(F),XP(e)
- R(b);N_GUARD,P_PINR(A)::S(F),XP(c)
- R(b);N_GUARD::S(F),XP(c)
- R(h);S_CUTB(i)::QAB(H)
- B(i);N_GUARD::QAB(H),XB(i)
- B(i);N_GUARD::QAB(H)
- Tries
- Try
- R(A);
- Threat
- R1(A)
- Vars
- Q(g);N_GUARD::S(F),XP(e)
- R(b);N_GUARD::S(F),XP(c)
- Refutation
- R(b);CHECK
- Try
- R(C);
- Threat
- R1(C)
- Vars
- Q(g);N_GUARD::S(F),XP(e)
- R(b);N_GUARD::S(F),XP(c)
- Refutation
- Q(g);CHECK
- Try
- Q(H);XP(e)
- Threat
- QAR1(H),XP(d)
- Vars
- Q(g);XQ(H)::S(F),XQ(g)
- Q(g);N_GUARD,P_PINR(C)::QAR1(H)
- Q(g);N_GUARD,P_PINP(E)::QAR1(H)
- R(b);N_GUARD::S(F),XP(c)
- Refutation
- R(h);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(h);::QAB1(H)
- R(h);::QAR1(H),XP(d)
- Refutation
- S(j);XQ(H)
- Try
- Q(H);
- Threat
- QAR1(H),XP(d)
- Vars
- R(b);N_GUARD,XQ(H)::S(F),XP(c)
- Q(g);N_GUARD,P_PINR(C)::S(F),XP(e)
- Refutation
- R(h);
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- Q(g);N_GUARD::S(F),XP(e)
- R(b);N_GUARD::S(F),XP(c)
- B(i);N_GUARD::QAB1(H),XB(i)
- Refutation
- R(h);
- Try
- Q(H);
- Threat
- QAR1(H),XP(d)
- Vars
- Q(g);N_GUARD,P_PINR(C)::S(F),XP(e)
- R(b);N_GUARD::S(F),XP(c)
- Refutation
- R(h);XQ(H)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- Q(g);N_GUARD::S(F),XP(e)
- R(b);N_GUARD::S(F),XP(c)
- B(i);N_GUARD::QAB1(H),XB(i)
- Refutation
- R(h);
- Try
- P(D);XR(b)
- Threat
- S(F),XP(c)
- Refutation
- R(h);
- Try
- Actual
- Q(H);XP(c)
- Threat
- QAR1(H)
- Vars
- R(b);XQ(H)::S(F),XR(b)
- Q(g);N_GUARD::S(F),XP(e)
- R(b);N_GUARD::QAR1(H),XP(d)
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).