MESON Chess Problem Database
Problem Display
PID: 264910 (B4B1K/QP2P2R/Npk2n2/3n1P2/2N5/2rR4/8/8 w - - 0 1)
Slesarenko, Anatoly Vasilevich
2nd HM., Astafyeva-30 JT (Kudesnik), 2021
#2
11 + 5
SOLUTION
- SOUND
- Sets
- 1...Kd7
- 2.b8Q#
- 2.b8R#
- 1...Se3
- 2.Qxb6#
- 1...Sb4
- 2.Qxb6#
- 1...Sf4
- 2.Qxb6#
- 1...Sc7
- 2.Qxb6#
- 1...Sxe7
- 2.Qxb6#
- 1...Se4
- 2.e8Q#
- 2.e8B#
- 1...Sg4
- 2.e8Q#
- 2.e8B#
- 1...Sh5
- 2.e8Q#
- 2.e8B#
- 1...Sxh7
- 2.e8Q#
- 2.e8B#
- 1...Sg8
- 2.e8Q#
- 2.e8B#
- 1...b5
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Kd7
- Tries
- 1.Se5+?
- 1...Kd6
- 2.e8Q#
- 2.e8R#
- 1...Kb5!
- 1...Kd6
- 1.Rxd5?
- threat
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rxc4
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sxd5
- 2.e8Q#
- 2.e8B#
- 1...Sxh7
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rc1
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rc2
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Ra3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rb3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rd3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Re3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rf3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rg3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rh3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Se4
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sg4
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sh5
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sd7
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Se8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sg8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...b5
- 2.Rd6#
- 2.Qc5#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Kxd5!
- threat
- 1.Rh6?
- threat
- 2.e8Q#
- 2.e8B#
- 1...Kd7
- 2.b8Q#
- 2.b8R#
- 1...Rxd3
- 2.e8Q#
- 2.e8B#
- 1...Rxc4
- 2.e8Q#
- 2.e8B#
- 1...Sxe7
- 2.Qxb6#
- 1...Rc1
- 2.e8Q#
- 2.e8B#
- 1...Rc2
- 2.e8Q#
- 2.e8B#
- 1...Ra3
- 2.e8Q#
- 2.e8B#
- 1...Rb3
- 2.e8Q#
- 2.e8B#
- 1...Se3
- 2.Qxb6#
- 2.e8Q#
- 2.e8B#
- 1...Sb4
- 2.Qxb6#
- 2.e8Q#
- 2.e8B#
- 1...Sf4
- 2.Qxb6#
- 2.e8Q#
- 2.e8B#
- 1...Sc7
- 2.Qxb6#
- 1...b5
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 2.e8Q#
- 2.e8B#
- 1...Kb5!
- threat
- 1.Qxb6+?
- 1...Kd7
- 2.Qb5#
- 1...Sxb6!
- 1...Kd7
- 1.e8Q+?
- 1...Sd7
- 2.Qxd7#
- 1...Sxe8!
- 1...Sd7
- 1.e8B+?
- 1...Sd7
- 2.Bxd7#
- 1...Sxe8!
- 1...Sd7
- 1.Se5+?
- Keys
- 1.Sd6!
- threat
- 2.b8Q#
- 2.b8B#
- 1...Kxd6
- 2.e8Q#
- 1...Kd7
- 2.e8Q#
- 1...Rxd3
- 2.b8Q#
- 2.b8B#
- 1...Sxe7
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sxh7
- 2.b8Q#
- 2.b8B#
- 2.e8Q#
- 2.e8B#
- 1...Rc1
- 2.b8Q#
- 2.b8B#
- 1...Rc2
- 2.b8Q#
- 2.b8B#
- 1...Ra3
- 2.b8Q#
- 2.b8B#
- 1...Rb3
- 2.b8Q#
- 2.b8B#
- 1...Rc4
- 2.b8Q#
- 2.b8B#
- 1...Rc5
- 2.b8Q#
- 2.b8B#
- 1...Se3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sb4
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Sf4
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Se4
- 2.b8Q#
- 2.b8B#
- 2.e8Q#
- 2.e8B#
- 1...Sg4
- 2.b8Q#
- 2.b8B#
- 2.e8Q#
- 2.e8B#
- 1...Sh5
- 2.b8Q#
- 2.b8B#
- 2.e8Q#
- 2.e8B#
- 1...Sd7
- 2.b8Q#
- 2.b8B#
- 1...Se8
- 2.b8Q#
- 2.b8B#
- 1...Sg8
- 2.b8Q#
- 2.b8B#
- 2.e8Q#
- 2.e8B#
- 1...b5
- 2.b8Q#
- 2.b8B#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- K(d);N_GUARD,P_SPINS(b),S_FLIGHT::P=Q
- S(b);N_GUARD::QAR1(E),XP(c)
- S(b);N_GUARD,XP(G)::QAR1(E),XP(c)
- S(e);N_GUARD::P=Q
- S(e);N_GUARD,XR(H)::P=Q
- Tries
- Try
- S(B);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINS(b)::P=Q
- Refutation
- K(d);S_FLIGHT
- Try
- R(A);XS(b)
- Threat
- DUALS(4)
- Vars
- S(e);N_GUARD,SBLOCK,XR(A)::P=Q
- Refutation
- K(d);S_FLIGHT,XR(A)
- Try
- R(H);P_PINS(e)
- Threat
- P=Q
- Vars
- K(d);N_GUARD,N_SPINS(e),P_SPINS(b),S_FLIGHT::P=Q
- R(a);XR(A)::P=Q
- R(a);XS(B)::P=Q
- S(b);N_GUARD,XP(G)::QAR1(E),XP(c)
- R(a);::P=Q
- S(b);N_GUARD::QAR1(E),XP(c)
- Refutation
- K(d);N_SPINS(e),S_FLIGHT
- Try
- Q(E);CHECK,XP(c)
- Vars
- K(d);N_GUARD,P_SPINS(b),S_FLIGHT::QAB(E)
- Refutation
- S(b);XQ(E)
- Try
- P(G);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAB1(G),XS(e)
- Refutation
- S(e);XQ(G)
- Try
- P(G);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::B(G),XS(e)
- Refutation
- S(e);XB(G)
- Try
- Actual
- S(B);
- Threat
- P=Q
- Vars
- K(d);P-FLIGHT,P_SPINS(b),S_CUTS(e),S_CUTS(e),XS(B)::P=Q
- K(d);S_FLIGHT::P=Q
- R(a);XR(A)::P=Q
- R(a);::P=Q
- S(e);::P=Q
- P(c);::P=Q
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).