MESON Chess Problem Database
Problem Display
PID: 238022 (8/4p3/1p2Bp2/pPp2K2/R1p5/PP2N3/kNR1p3/4Q3 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Shakhmaty v SSSR, 1976
#2
10 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxb3
- 2.Bxc4#
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...Kxb3
- Tries
- 1.Ke4?
- 1...Kxb3
- 2.Bxc4#
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...f5+!
- 1...Kxb3
- 1.Kf4?
- 1...Kxb3
- 2.Bxc4#
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...f5!
- 1...Kxb3
- 1.Kg4?
- 1...Kxb3
- 2.Bxc4#
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...f5+!
- 1...Kxb3
- 1.Kg6?
- 1...Kxb3
- 2.Bxc4#
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...f5!
- 1...Kxb3
- 1.Sbd1+?
- 1...Ka1
- 2.Sf2#
- 2.Sc3#
- 1...Kb1
- 2.Sf2#
- 2.Sc3#
- 1...Kxb3!
- 1...Ka1
- 1.Sg2?
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...Kxb3!
- 1...cxb3
- 1.Sg4?
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...Kxb3!
- 1...cxb3
- 1.Sd5?
- 1...cxb3
- 2.Sc3#
- 1...c3
- 2.Sxc3#
- 1...Kxb3!
- 1...cxb3
- 1.Rxe2?
- 1...Kxb3
- 2.Bxc4#
- 1...cxb3
- 2.Sd3#
- 1...c3!
- 1...Kxb3
- 1.Raxc4?
- 1...Kxa3
- 2.Ra4#
- 1...Kxb3
- 2.R4c3#
- 1...a4!
- 1...Kxa3
- 1.Rxa5?
- 1...Kxb3
- 2.Bxc4#
- 1...cxb3
- 2.Sd3#
- 1...c3
- 2.Sd3#
- 1...bxa5!
- 1...Kxb3
- 1.Qa1+?
- 1...Kxb3
- 2.Bxc4#
- 1...Kxa1!
- 1...Kxb3
- 1.Qb1+?
- 1...Kxb3
- 2.Bxc4#
- 1...Kxb1!
- 1...Kxb3
- 1.Ke4?
- Keys
- 1.Rcxc4!
- 1...Kxb2
- 2.Rc2#
- 1...Kxb3
- 2.Rcb4#
- 1...Kxb2
- 1.Rcxc4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Refutation
- P(g);CHECK
- Try
- K(I);P-FLIGHT
- Vars
- K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Refutation
- P(g);
- Try
- K(I);S_FLIGHT
- Vars
- K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Refutation
- P(g);CHECK
- Try
- K(I);S_FLIGHT
- Vars
- K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Refutation
- P(g);
- Try
- S(B);CHECK
- Refutation
- K(a);P_SPINP(c),S_FLIGHT,XP(E)
- Try
- S(F);
- Vars
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Refutation
- K(a);P_SPINP(c),S_FLIGHT,XP(E)
- Try
- S(F);
- Vars
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Refutation
- K(a);P_SPINP(c),S_FLIGHT,XP(E)
- Try
- S(F);
- Vars
- P(c);XP(E)::S(F)
- P(c);::S(F),XP(c)
- Refutation
- K(a);S_FLIGHT,XP(E)
- Try
- R(C);XP(b)
- Vars
- K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- Refutation
- P(c);
- Try
- R(G);XP(c)
- Vars
- K(a);OGATEB,P-FLIGHT,XP(D)::R1(G)
- K(a);OGATEB,S_FLIGHT,XP(E)::B(J)+R(G),DCHECK
- Refutation
- P(d);
- Try
- R(G);XP(d)
- Vars
- K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- P(c);P_SPINP(c),XP(E)::R(C)+S(B)
- P(c);::R(C)+S(B)
- Refutation
- P(f);XR(G)
- Try
- Q(A);CHECK
- Vars
- K(a);P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- Refutation
- K(a);P-FLIGHT,XQ(A)
- Try
- Q(A);CHECK
- Vars
- K(a);P_SPINP(c),S_FLIGHT,XP(E)::B(J),XP(c)
- Refutation
- K(a);S_FLIGHT,XQ(A)
- Try
- Actual
- R(C);XP(c)
- Vars
- K(a);OGATEB,P-FLIGHT,XS(B)::R1(C)
- K(a);OGATEB,S_FLIGHT,XP(E)::B(J)+R(C),DCHECK
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).