MESON Chess Problem Database
Problem Display
PID: 87514 (2b5/Np1n2P1/Pnp5/1p5R/1P1kp2Q/4N3/4PP2/2RK4 w - - 0 1)
Evdokimov, Valery Antolovich
The Problemist, 1993
#2
11 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sc5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sb8
- 2.Qf6#
- 1...Sf8
- 2.Qf6#
- 1...c5
- 2.Sxb5#
- 1...bxa6
- 2.Sxc6#
- 1...Sc5
- Tries
- 1.Rcc5?
- threat
- 2.Sc2#
- 2.Sf5#
- 1...Sxc5
- 2.Qf6#
- 1...Sd5
- 2.Sc2#
- 1...Se5
- 2.Sc2#
- 1...Sf6
- 2.Sc2#
- 2.Qxf6#
- 1...Sb8
- 2.Sc2#
- 2.Qf6#
- 1...Sf8
- 2.Sc2#
- 2.Qf6#
- 1...Sc4!
- threat
- 1.Rxc6?
- threat
- 2.Sc2#
- 2.Sxb5#
- 1...bxa6
- 2.Sc2#
- 1...Sc4
- 2.Sxb5#
- 1...Sc5
- 2.Sxb5#
- 2.Qf6#
- 1...Se5
- 2.Sxb5#
- 1...bxc6!
- threat
- 1.Rhc5?
- threat
- 2.Sc2#
- 2.Sf5#
- 1...Sxc5
- 2.Qf6#
- 1...Sc4
- 2.Sf5#
- 1...Se5
- 2.Sc2#
- 1...Sf6
- 2.Sc2#
- 2.Qxf6#
- 1...Sb8
- 2.Sc2#
- 2.Qf6#
- 1...Sf8
- 2.Sc2#
- 2.Qf6#
- 1...Sd5!
- threat
- 1.Qf6+?
- 1...Se5
- 2.Qxe5#
- 1...Sxf6!
- 1...Se5
- 1.Qe7?
- 1...bxa6
- 2.Sxc6#
- 1...Sa4
- 2.Qd6#
- 1...Sd5
- 2.Sf5#
- 1...Sa8
- 2.Qd6#
- 1...Sc5
- 2.Qxc5#
- 2.Qf6#
- 2.Qe5#
- 1...Se5
- 2.Qc5#
- 2.Qxe5#
- 1...Sf6
- 2.Qc5#
- 2.Qxf6#
- 2.Qe5#
- 1...Sb8
- 2.Qc5#
- 2.Qf6#
- 2.Qe5#
- 1...Sf8
- 2.Qc5#
- 2.Qf6#
- 2.Qe5#
- 1...c5
- 2.Sxb5#
- 1...Sc4!
- 1...bxa6
- 1.Qh2?
- 1...bxa6
- 2.Sxc6#
- 1...Sa4
- 2.Qd6#
- 1...Sd5
- 2.Sf5#
- 1...Sa8
- 2.Qd6#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...c5
- 2.Sxb5#
- 1...Sc4!
- 1...bxa6
- 1.Qf4?
- 1...bxa6
- 2.Sxc6#
- 1...Sa4
- 2.Qd6#
- 1...Sd5
- 2.Sf5#
- 1...Sa8
- 2.Qd6#
- 1...Sc5
- 2.Qe5#
- 2.Qf6#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 2.Qxf6#
- 1...Sb8
- 2.Qe5#
- 2.Qf6#
- 1...Sf8
- 2.Qe5#
- 2.Qf6#
- 1...c5
- 2.Sxb5#
- 1...Sc4!
- 1...bxa6
- 1.Rcc5?
- Keys
- 1.Qg3!
- 1...bxa6
- 2.Sxc6#
- 1...Sa4
- 2.Qd6#
- 1...Sc4
- 2.Sc2#
- 1...Sd5
- 2.Sf5#
- 1...Sa8
- 2.Qd6#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...c5
- 2.Sxb5#
- 1...bxa6
- 1.Qg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(g);N_GUARD::QAB(G)
- S(g);N_GUARD::QAB(G),XS(g)
- P(e);N_GUARD::S(J),XP(c)
- P(f);N_GUARD,XP(I)::S(J),XP(e)
- Tries
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD,XR(A)::QAB(G)
- S(d);::S(E)
- S(g);::S(E)
- Refutation
- S(d);
- Try
- R(A);XP(e)
- Threat
- DUALS(2)
- Vars
- P(f);XP(I)::S(E)
- S(d);::S(J),XP(c)
- S(g);::S(J),XP(c)
- Refutation
- P(f);XR(A)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD,XR(H)::QAB(G)
- S(d);::S(E)
- S(g);::S(E)
- Refutation
- S(d);
- Try
- Q(G);CHECK,N_PINP(b)
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAB1(G),XS(g)
- Refutation
- S(g);XQ(G)
- Try
- Q(G);N_PINP(b)
- Vars
- P(f);N_GUARD,XP(I)::S(J),XP(e)
- S(d);N_GUARD::QAR2(G)
- S(d);SBLOCK::S(E)
- P(e);N_GUARD::S(J),XP(c)
- Refutation
- S(d);
- Try
- Q(G);N_PINP(b)
- Vars
- P(f);N_GUARD,XP(I)::S(J),XP(e)
- S(d);N_GUARD::QAR2(G)
- S(d);SBLOCK::S(E)
- S(g);N_GUARD::QAB1(G)
- S(g);N_GUARD::QAB1(G),XS(g)
- P(e);N_GUARD::S(J),XP(c)
- Refutation
- S(d);
- Try
- Q(G);
- Vars
- P(f);N_GUARD,XP(I)::S(J),XP(e)
- S(d);N_GUARD::QAR2(G)
- S(d);SBLOCK::S(E)
- S(g);N_GUARD::QAB1(G),XS(g)
- P(e);N_GUARD::S(J),XP(c)
- Refutation
- S(d);
- Try
- Actual
- Q(G);N_PINP(b)
- Vars
- P(f);N_GUARD,XP(I)::S(J),XP(e)
- S(d);N_GUARD::QAR2(G)
- S(d);SBLOCK::S(E)
- S(g);N_GUARD::QAB1(G)
- S(g);N_GUARD::QAB1(G),XS(g)
- P(e);N_GUARD::S(J),XP(c)
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).