MESON Chess Problem Database
Problem Display
PID: 154485 (3qb1N1/1Nn3P1/6P1/brR1B2R/4k2p/2p1P3/4PK2/8 w - - 0 1)
Lobusov, Andrey Jakovlevic
1st Prize, Zadachi i Etyudi, 1995
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qg5
- 2.Sd6#
- 1...Qf6+
- 2.Sxf6#
- 1...Qd1
- 2.Sf6#
- 1...Qd2
- 2.Sf6#
- 1...Qd3
- 2.Sf6#
- 1...Qd4
- 2.Sf6#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- 1...Qd7
- 2.Sf6#
- 1...Qa8
- 2.Sd6#
- 2.Sf6#
- 1...Qb8
- 2.Sd6#
- 2.Sf6#
- 1...Qc8
- 2.Sd6#
- 2.Sf6#
- 1...Bd7
- 2.Sd6#
- 1...Sd5
- 2.Rc4#
- 1...Qg5
- Tries
- 1.Sxd8?
- threat
- 2.Sf6#
- 1...Sd5
- 2.Rc4#
- 1...Rb6!
- threat
- 1.Bxc3?
- threat
- 2.Rhe5#
- 1...Qf6+
- 2.Sxf6#
- 1...Rxc5
- 2.Sxc5#
- 1...Qg5
- 2.Sd6#
- 1...Qe7
- 2.Rc4#
- 1...Qd4
- 2.Rxh4#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- 1...Bxc3!
- threat
- 1.Bg3?
- threat
- 2.Rhe5#
- 1...Qf6+
- 2.Sxf6#
- 1...Rxc5
- 2.Sxc5#
- 1...Qg5
- 2.Sd6#
- 1...Qe7
- 2.Rc4#
- 1...Qd4
- 2.Rxh4#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- 1...hxg3+!
- threat
- 1.Bd4?
- threat
- 2.Rhe5#
- 1...Qf6+
- 2.Sxf6#
- 1...Qxd4
- 2.Rxh4#
- 1...Rxc5
- 2.Sxc5#
- 1...Qg5
- 2.Sd6#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- 1...Qe7!
- threat
- 1.Bf4?
- threat
- 2.Rhe5#
- 1...Rxc5
- 2.Sxc5#
- 1...Qg5
- 2.Sd6#
- 1...Qf6
- 2.Sxf6#
- 1...Qe7
- 2.Rc4#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- 1...Qd4!
- threat
- 1.Bd6?
- threat
- 2.Rc4#
- 2.Rhe5#
- 1...Qf6+
- 2.Sxf6#
- 1...Qxd6
- 2.Sxd6#
- 1...Rxc5
- 2.Sxc5#
- 1...Qe7
- 2.Rc4#
- 1...Rb4
- 2.Rce5#
- 2.Rhe5#
- 1...Bb6
- 2.Rhe5#
- 1...Bf7
- 2.Rhe5#
- 1...Se6
- 2.Rhe5#
- 1...Qg5!
- threat
- 1.Bf6?
- threat
- 2.Rxh4#
- 2.Rhe5#
- 1...Qxf6+
- 2.Sxf6#
- 1...Rxc5
- 2.Sxc5#
- 1...Qe7
- 2.Rc4#
- 2.Rxh4#
- 1...Qd4
- 2.Rxh4#
- 1...Qd6
- 2.Sxd6#
- 1...Qd7
- 2.Rhe5#
- 1...Qc8
- 2.Sd6#
- 2.Rc4#
- 2.Rhe5#
- 1...Bd7
- 2.Sd6#
- 2.Rc4#
- 2.Rhe5#
- 1...Sd5
- 2.Rc4#
- 2.Re5#
- 1...Se6
- 2.Rhe5#
- 1...h3
- 2.Rh4#
- 2.Rhe5#
- 1...Qd5!
- threat
- 1.Bxc7?
- threat
- 2.Rhe5#
- 1...Qf6+
- 2.Sxf6#
- 1...Qxc7
- 2.Sf6#
- 1...Rxc5
- 2.Sxc5#
- 1...Qd5
- 2.Sf6#
- 1...Qg5
- 2.Sd6#
- 1...Qe7
- 2.Rc4#
- 1...Qd4
- 2.Rxh4#
- 1...Qd6
- 2.Sxd6#
- 1...Bxc7!
- threat
- 1.Rc4+?
- 1...Qd4
- 2.Sf6#
- 2.Rxd4#
- 1...Kd5!
- 1...Qd4
- 1.Sxd8?
- Keys
- 1.Bh2!
- threat
- 2.Rhe5#
- 1...Qf6+
- 2.Sxf6#
- 1...Rxc5
- 2.Sxc5#
- 1...Qg5
- 2.Sd6#
- 1...Qe7
- 2.Rc4#
- 1...Qd4
- 2.Rxh4#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- threat
- 1.Bh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(g);N_GUARD::S(H)
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD,P_PINP(A)::S(J)
- Q(g);N_GUARD,P_PINP(C)::S(J)
- Q(g);N_GUARD::S(H),XQ(g)
- B(h);S_CUTQ(g)::S(H)
- S(f);SBLOCK,S_CUTQ(g)::R(D)
- Tries
- Try
- S(H);XQ(g)
- Threat
- S(J)
- Vars
- S(f);SBLOCK::R(D)
- Refutation
- R(e);
- Try
- B(E);XP(a)
- Threat
- R1(F)
- Vars
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- R(e);XR(D)::S(H),XR(e)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD::R(D)
- Q(g);N_GUARD,P_PINP(C)::R(F),XP(c)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD::S(H),XQ(g)
- Refutation
- B(d);XB(E)
- Try
- B(E);
- Threat
- R1(F)
- Vars
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- R(e);XR(D)::S(H),XR(e)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD::R(D)
- Q(g);N_GUARD,P_PINP(C)::R(F),XP(c)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD::S(H),XQ(g)
- Refutation
- P(c);CHECK,XB(E)
- Try
- B(E);
- Threat
- R1(F)
- Vars
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD,P_PINP(C),XB(E)::R(F),XP(c)
- R(e);XR(D)::S(H),XR(e)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD::S(H),XQ(g)
- Refutation
- Q(g);
- Try
- B(E);
- Threat
- R1(F)
- Vars
- R(e);XR(D)::S(H),XR(e)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD,P_PINB(E)::S(J),XQ(g)
- Q(g);N_GUARD::R(D)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD::S(H),XQ(g)
- Refutation
- Q(g);P_PINP(C)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- Q(g);XB(E)::S(H),XQ(g)
- R(e);XR(D)::S(H),XR(e)
- Q(g);::R(D)
- B(d);::R1(F)
- B(h);::R1(F)
- S(f);::R1(F)
- Refutation
- Q(g);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,XB(E)::S(J),XQ(g)
- R(e);XR(D)::S(H),XR(e)
- Q(g);P_PINP(C)::R(F),XP(c)
- Q(g);N_GUARD::S(H),XQ(g)
- Q(g);::R1(F)
- S(f);::R1(F)
- Refutation
- Q(g);
- Try
- B(E);XS(f)
- Threat
- R1(F)
- Vars
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD,XB(E)::S(J)
- R(e);XR(D)::S(H),XR(e)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD::R(D)
- Q(g);N_GUARD,P_PINP(C)::R(F),XP(c)
- Q(g);N_GUARD::S(H),XQ(g)
- Refutation
- B(d);XB(E)
- Try
- R(D);CHECK
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- B(E);
- Threat
- R1(F)
- Vars
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- R(e);XR(D)::S(H),XR(e)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD::R(D)
- Q(g);N_GUARD,P_PINP(C)::R(F),XP(c)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD::S(H),XQ(g)
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).