MESON Chess Problem Database
Problem Display
PID: 234485 (6nK/b5R1/3p4/3P1kP1/1r4NQ/3P4/BP1PP2B/6nN w - - 0 1)
Makaronets, Leonid
Deutsche Schachzeitung, 1972
#2
13 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2
- 2.e4#
- 1...Rb3
- 2.e4#
- 1...Rd4
- 2.Se3#
- 1...Rf4
- 2.Sg3#
- 1...Rxg4
- 2.Qh7#
- 1...Rb5
- 2.e4#
- 1...Rb6
- 2.Se3#
- 2.e4#
- 1...Rb7
- 2.e4#
- 1...Rb8
- 2.e4#
- 1...Be3
- 2.Sxe3#
- 1...Bd4
- 2.e4#
- 1...Bb8
- 2.Se3#
- 1...Sf6
- 2.Sh6#
- 1...Sh6
- 2.Sxh6#
- 1...Se7
- 2.Sh6#
- 1...Rxb2
- Tries
- 1.Kxg8?
- threat
- 2.Sh6#
- 1...Rxg4
- 2.Qh7#
- 1...Rf4
- 2.Sg3#
- 1...Rb8+!
- threat
- 1.Shf2?
- threat
- 2.Qh7#
- 1...Sf6
- 2.Sh6#
- 1...Sh6
- 2.Sxh6#
- 1...Se7
- 2.Sh6#
- 1...Bxf2!
- threat
- 1.Rf7+?
- 1...Sf6
- 2.Rxf6#
- 1...Kg6!
- 1...Sf6
- 1.Rxg8?
- threat
- 2.Sh6#
- 1...Rxg4
- 2.Qh7#
- 1...Rf4
- 2.Sg3#
- 1...Bd4+!
- threat
- 1.Qh3?
- threat
- 2.Se3#
- 2.Sh6#
- 1...Rxg4
- 2.Qh7#
- 2.e4#
- 1...Rf4
- 2.Sg3#
- 1...Be3
- 2.Sxe3#
- 2.Sh6#
- 1...Sh6
- 2.Se3#
- 2.Sxh6#
- 1...Sxh3!
- threat
- 1.e3?
- threat
- 2.Sg3#
- 1...Rxg4
- 2.Qh7#
- 1...Bxe3
- 2.Sxe3#
- 1...Se2!
- threat
- 1.d4?
- threat
- 2.Se3#
- 2.Bb1#
- 1...Ke4
- 2.Se3#
- 2.Sh6#
- 1...Rxb2
- 2.Se3#
- 1...Rxd4
- 2.Se3#
- 1...Bxd4
- 2.Bb1#
- 1...Rc4
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 2.Sh6#
- 1...Rb3!
- threat
- 1.Kxg8?
- Keys
- 1.Bb1!
- threat
- 2.d4#
- 1...Rxb2
- 2.e4#
- 1...Rxg4
- 2.Qh7#
- 1...Rb3
- 2.e4#
- 1...Rc4
- 2.dxc4#
- 1...Rd4
- 2.Se3#
- 1...Re4
- 2.dxe4#
- 1...Rf4
- 2.Sg3#
- 1...Bd4
- 2.e4#
- 1...Sf6
- 2.Sh6#
- threat
- 1.Bb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(b);N_GUARD,XP(C)::P(E)
- R(b);N_GUARD::P(E)
- R(b);S_CUTB(e)::S(H)
- R(b);SBLOCK::S(A)
- R(b);SBLOCK,XS(H)::QAB(I)
- B(e);N_GUARD::S(H),XB(e)
- B(e);P_PINR(L),S_CUTR(b)::P(E)
- B(e);N_GUARD::S(H)
- S(f);N_GUARD::S(H)
- S(f);N_GUARD::S(H),XS(f)
- Tries
- Try
- K(M);P-FLIGHT,XS(f)
- Threat
- S(H)
- Vars
- R(b);SBLOCK,XS(H)::QAB(I)
- R(b);SBLOCK::S(A)
- Refutation
- R(b);CHECK
- Try
- S(A);
- Threat
- QAB(I)
- Vars
- S(f);N_GUARD::S(H)
- S(f);N_GUARD::S(H),XS(f)
- Refutation
- B(e);XS(A)
- Try
- R(L);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::R1(L),XS(f)
- Refutation
- K(c);S_FLIGHT
- Try
- R(L);XS(f)
- Threat
- S(H)
- Vars
- R(b);SBLOCK,XS(H)::QAB(I)
- R(b);SBLOCK::S(A)
- Refutation
- B(e);CHECK
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(b);SBLOCK::S(A)
- Refutation
- S(a);XQ(I)
- Try
- P(E);
- Threat
- S(A)
- Vars
- R(b);SBLOCK,XS(H)::QAB(I)
- B(e);XP(E)::S(H),XB(e)
- Refutation
- S(a);
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- R(b);XP(C)::S(H)
- R(b);XP(G)::S(H)
- B(e);P_PINR(L),XP(G)::B(B)
- R(b);::S(H)
- Refutation
- R(b);
- Try
- Actual
- B(B);
- Threat
- B(B)+P(G)
- Vars
- R(b);N_GUARD,XP(C)::P(E)
- R(b);SBLOCK,XS(H)::QAB(I)
- R(b);N_GUARD::P(E)
- R(b);OGATE::B(B)+P(G),XR(b)
- R(b);S_CUTB(e)::S(H)
- R(b);OGATE::P(G),XR(b)
- R(b);SBLOCK::S(A)
- B(e);P_PINR(L),S_CUTR(b)::P(E)
- S(f);N_GUARD::S(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).