MESON Chess Problem Database
Problem Display
PID: 242188 (2n5/6q1/1pQ5/4N3/1BPk4/2R4r/1K1nR3/7b w - - 0 1)
Kisis, Imants J
Il Due Mosse, 1962
#2
7 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rh2
- 2.Rd3#
- 1...Rxc3
- 2.Bxc3#
- 1...Rd3
- 2.Rxd3#
- 1...Rf3
- 2.Qd5#
- 1...Rh4
- 2.Rd3#
- 1...Rh5
- 2.Rd3#
- 1...Rh6
- 2.Rd3#
- 1...Rh7
- 2.Rd3#
- 1...Rh8
- 2.Rd3#
- 1...Bf3
- 2.Rd3#
- 1...Bd5
- 2.Qxd5#
- 1...Bxc6
- 2.Sxc6#
- 1...Sf3
- 2.Re4#
- 2.Rd3#
- 2.Qe4#
- 2.Qd5#
- 1...Sxc4+
- 2.Rxc4#
- 2.Qxc4#
- 1...Se4
- 2.Qd5#
- 1...Sd6
- 2.Qxb6#
- 1...Sa7
- 2.Qxb6#
- 1...Se7
- 2.Qxb6#
- 1...b5
- 2.Bc5#
- 2.Qc5#
- 1...Rh2
- Tries
- 1.Sf3+?
- 1...Rxf3
- 2.Qd5#
- 1...Sxf3
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Bxf3!
- 1...Rxf3
- 1.Re4+?
- 1...Sxe4
- 2.Qd5#
- 1...Bxe4!
- 1...Sxe4
- 1.Rxh3?
- threat
- 2.Bc3#
- 2.Rd3#
- 1...Sxc4+
- 2.Qxc4#
- 1...Qxe5
- 2.Bc3#
- 2.Rxd2#
- 1...Bxc6
- 2.Rd3#
- 1...Be4
- 2.Bc3#
- 1...Se4
- 2.Qd5#
- 1...Qg6
- 2.Bc3#
- 1...Qh7
- 2.Bc3#
- 1...Bf3
- 2.Bc3#
- 1...Sb1
- 2.Rd3#
- 1...Sf3
- 2.Bc3#
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Qg3!
- threat
- 1.Qf3?
- threat
- 2.Sc6#
- 2.Rd3#
- 1...Sxc4+
- 2.Rxc4#
- 1...Qxe5
- 2.Rxd2#
- 1...Rxf3
- 2.Sc6#
- 1...Bxf3
- 2.Rd3#
- 1...Se4
- 2.Sc6#
- 2.Rxe4#
- 1...Qf6
- 2.Rd3#
- 1...Qh6
- 2.Rd3#
- 1...Qb7
- 2.Rd3#
- 1...Qc7
- 2.Rd3#
- 1...Qd7
- 2.Rd3#
- 1...Qh7
- 2.Sc6#
- 1...Rh6
- 2.Rd3#
- 2.Qf2#
- 2.Qd3#
- 2.Qe3#
- 1...Sa7
- 2.Rd3#
- 1...Se7
- 2.Rd3#
- 1...Qg6!
- threat
- 1.Qe4+?
- 1...Sxe4
- 2.Sc6#
- 1...Bxe4!
- 1...Sxe4
- 1.Qd6+?
- 1...Bd5
- 2.Sc6#
- 2.Qxd5#
- 1...Sxd6!
- 1...Bd5
- 1.Sf3+?
- Keys
- 1.Rf3!
- threat
- 2.Bc3#
- 2.Qd5#
- 1...Sxc4+
- 2.Qxc4#
- 1...Qxe5
- 2.Bc3#
- 2.Rxd2#
- 1...Rxf3
- 2.Qd5#
- 1...Bxf3
- 2.Bc3#
- 1...Se4
- 2.Rxe4#
- 2.Qxe4#
- 2.Qd5#
- 1...Qb7
- 2.Bc3#
- 1...Qd7
- 2.Bc3#
- 1...Qf7
- 2.Bc3#
- 1...Qg8
- 2.Bc3#
- 1...Sb1
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Se7
- 2.Bc3#
- 2.Qxb6#
- threat
- 1.Rf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 14
- Sets
- R(c);N_GUARD::R1(C)
- R(c);OGATE,XR(C)::B(D),XR(c)
- R(c);N_GUARD::R1(C),XR(c)
- R(c);S_CUTB(a)::QAR1(G)
- B(a);S_CUTR(c)::R1(C)
- B(a);N_GUARD::QAR1(G),XB(a)
- B(a);XQ(G)::S(F),XB(a)
- S(b);S_CUTB(a)::QAR1(G)
- S(g);N_GUARD::QAB(G),XP(e)
- Tries
- Try
- S(F);CHECK
- Vars
- R(c);XS(F)::QAR1(G)
- Refutation
- B(a);XS(F)
- Try
- R(B);CHECK
- Vars
- S(b);XR(B)::QAR1(G)
- Refutation
- B(a);XR(B)
- Try
- R(C);XR(c)
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::QAR1(G),XS(b)
- B(a);XQ(G)::R1(C)
- B(a);::B(D)
- S(b);S_CUTB(a)::QAR1(G)
- Q(f);::B(D)
- S(b);::R1(C)
- Refutation
- Q(f);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::R1(C),XS(b)
- Q(f);SBLOCK,XS(F)::R(B),XS(b)
- R(c);XQ(G)::S(F)
- B(a);XQ(G)::R1(C)
- Q(f);::R1(C)
- Q(f);::S(F)
- S(g);::R1(C)
- Refutation
- Q(f);
- Try
- Q(G);CHECK
- Vars
- S(b);XQ(G)::S(F)
- Refutation
- B(a);XQ(G)
- Try
- Q(G);CHECK
- Refutation
- S(g);XQ(G)
- Try
- Actual
- R(C);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::QAR1(G),XS(b)
- R(c);XR(C)::QAR1(G)
- B(a);XR(C)::B(D)
- Q(f);::B(D)
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).