MESON Chess Problem Database
Problem Display
PID: 224208 (3n1R2/K3N3/b1pp1P1n/p1P1k1N1/8/p5P1/5B2/1Q2rr2 w - - 0 1)
Popov, Georgy Aleksandrov
Suomen Shakki, 1960
#2
9 + 10
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Qe4#
- 1...Rd1
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Be2
- 2.Qe4#
- 1...Sg4
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Shf7
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...Se6
- 2.Sf3#
- 1...a2
- 2.Qb2#
- 1...dxc5
- 2.Qb8#
- 1...d5
- 2.Sg6#
- 2.Qb8#
- 1...Rc1
- Tries
- 1.Qc2?
- threat
- 2.Qc3#
- 1...dxc5
- 2.Qxc5#
- 1...Rc1
- 2.Qe4#
- 1...Rd1
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Sf5
- 2.Qxf5#
- 1...Se6
- 2.Sf3#
- 1...d5
- 2.Sg6#
- 1...Re3!
- threat
- 1.Qd3?
- threat
- 2.Sg6#
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 2.Qxd6#
- 1...Rxf2
- 2.Sg6#
- 2.Qc3#
- 2.Qxd6#
- 1...dxc5
- 2.Sg6#
- 1...Shf7
- 2.Bd4#
- 2.Qf5#
- 2.Qc3#
- 2.Qd4#
- 1...Sdf7
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 1...Rc1
- 2.Sg6#
- 2.Bd4#
- 2.Qe4#
- 2.Qe3#
- 2.Qd4#
- 2.Qxd6#
- 1...Rd1
- 2.Sg6#
- 2.Bd4#
- 2.Qe4#
- 2.Qe3#
- 1...Re3
- 2.Sg6#
- 2.Qxe3#
- 2.Qxd6#
- 1...Re4
- 2.Qxe4#
- 2.Qxd6#
- 1...Sf5
- 2.Sg6#
- 2.Qxf5#
- 1...Se6
- 2.Sf3#
- 2.Sxc6#
- 2.Sg6#
- 2.Qxd6#
- 1...Sb7
- 2.Sxc6#
- 2.Sg6#
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 1...d5
- 2.Sg6#
- 2.Bd4#
- 2.Qd4#
- 1...Bxd3!
- threat
- 1.Qxe1+?
- 1...Be2
- 2.Qc3#
- 2.Qxe2#
- 1...Rxe1!
- 1...Be2
- 1.Qb4?
- threat
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 2.Qf4#
- 1...Rxf2
- 2.Qc3#
- 1...dxc5
- 2.Qxc5#
- 2.Qf4#
- 2.Qb8#
- 1...Rc1
- 2.Bd4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...Rd1
- 2.Qe4#
- 2.Qf4#
- 1...Re3
- 2.Qf4#
- 1...Re4
- 2.Qxe4#
- 1...Bc4
- 2.Qc3#
- 1...Sf5
- 2.Qf4#
- 1...Se6
- 2.Sf3#
- 1...d5
- 2.Bd4#
- 2.Qd4#
- 2.Qf4#
- 2.Qb8#
- 1...axb4!
- threat
- 1.Qc2?
- Keys
- 1.Qb3!
- threat
- 2.Qc3#
- 1...dxc5
- 2.Qb8#
- 1...Re3
- 2.Qxe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Re4
- 2.Sf3#
- 1...Sf5
- 2.Sg6#
- 1...Se6
- 2.Qxe6#
- 1...d5
- 2.Qb8#
- threat
- 1.Qb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(a);N_GUARD::QAR1(A)
- R(a);N_GUARD::QAR1(A),XR(a)
- B(f);S_CUTR(a)::QAR1(A)
- S(i);N_GUARD::QAR1(A)
- S(i);N_GUARD::QAR1(A),XS(i)
- S(j);SBLOCK::S(E)
- P(c);N_GUARD::QAB(A)
- P(h);OGATEB,XP(D)::QAB(A)
- Tries
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- P(h);OGATE,XP(D)::QAR2(A),XP(h)
- R(a);N_GUARD::QAR1(A)
- R(a);N_GUARD::QAR1(A),XR(a)
- S(i);N_GUARD::QAR1(A),XS(i)
- S(j);SBLOCK::S(E)
- P(h);SBLOCK::S(H)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- DUALS(5)
- Vars
- P(h);XP(D)::S(H)
- Refutation
- B(f);XQ(A)
- Try
- Q(A);CHECK,XR(a)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(b);XB(B)::QAB(A)
- R(a);::QAB1(A)
- R(a);N_GUARD::QAR1(A),XR(a)
- B(f);::QAB(A)
- S(i);::QAB1(A)
- S(j);SBLOCK::S(E)
- Refutation
- P(d);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- P(h);OGATEB,XP(D)::QAB(A)
- R(a);N_GUARD::QAR2(A),XR(a)
- R(a);N_GUARD::QAR2(A)
- R(a);SBLOCK::S(E)
- S(i);SBLOCK::S(H)
- S(j);N_GUARD::QAR1(A),XS(j)
- P(h);OGATEB::QAB(A)
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).