MESON Chess Problem Database
Problem Display
PID: 17445 (5n1b/B2N4/3p2Qn/1B1k4/r7/3P3r/N6p/1b1RR2K w - - 0 1)
Rukhlis, Efim Naumovich
1/2 Prize, Sverdlovsk Sports Committee, 1946
#2
9 + 9
| 14752 | Soviet Chess Compositions (1945-1947) | 1949 |
| 3147 | Chess Problems: Introduction to an Art | 1963 |
| 3105 | FIDE Album (1945-1955) | 1964 |
| 6479 | Problemschach (Sidler) | 1968 |
| 23 | Die Schwalbe | 1969 |
| 2048 | Tuxens skakopgaver (Leif C Schmidt) | 1984 |
| 3364 | Solving in Style | 1985 |
| 16882 | KSG-Problemschach 1969-1987 (Muck/Laue) | 1993 |
| 14609 | Mostly Three=Movers | 1995 |
| 23 | Die Schwalbe | 2007 |
| 145 | StrateGems | 2007 |
| 56 | The Problemist | 2007 |
| 136 | Problem Observer | 2015 |
| 133 | The Problemist Supplement | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Qe4#
- 1...Ra3
- 2.Sb4#
- 2.Qe4#
- 1...Rb4
- 2.Sxb4#
- 1...Rc4
- 2.dxc4#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Qxe4#
- 2.dxe4#
- 1...Ra5
- 2.Sb4#
- 2.Qe4#
- 1...Ra6
- 2.Sb4#
- 2.Qe4#
- 1...Rxa7
- 2.Qe4#
- 1...Bc3
- 2.Sxc3#
- 1...Bd4
- 2.Qe4#
- 1...Bf6
- 2.Sxf6#
- 1...Se6
- 2.Qxe6#
- 1...Sxd7
- 2.Qe6#
- 1...Sh7
- 2.Qe6#
- 1...Rxa2
- Tries
- 1.Sb6+?
- 1...Kd4
- 2.Qxd6#
- 1...Kc5!
- 1...Kd4
- 1.Bxa4?
- threat
- 2.Sb4#
- 2.Qe4#
- 1...Rxd3
- 2.Qe4#
- 1...Bxa2
- 2.Qe4#
- 1...Bxd3
- 2.Qe4#
- 1...Sxg6
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 1...Bc3
- 2.Sxc3#
- 2.Qe4#
- 1...Be5
- 2.Sb4#
- 1...Sf5
- 2.Sb4#
- 1...Rh4!
- threat
- 1.Bf2?
- threat
- 2.Sb6#
- 1...Sxd7
- 2.Qe6#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Qxe4#
- 2.dxe4#
- 1...Ra6
- 2.Sb4#
- 2.Qe4#
- 1...Bd4
- 2.Qe4#
- 1...Re3!
- threat
- 1.Rc1?
- threat
- 2.Bc6#
- 1...Rxa7
- 2.Qe4#
- 1...Rc4
- 2.dxc4#
- 1...Ra6
- 2.Sb4#
- 2.Qe4#
- 1...Bc3
- 2.Sxc3#
- 1...Bc2!
- threat
- 1.Re5+?
- 1...dxe5
- 2.Sc3#
- 2.Bc6#
- 2.Qc6#
- 1...Bxe5!
- 1...dxe5
- 1.Qf5+?
- 1...Be5
- 2.Sc3#
- 2.Sf6#
- 1...Sxf5!
- 1...Be5
- 1.Qf7+?
- 1...Se6
- 2.Qxe6#
- 1...Sxf7!
- 1...Se6
- 1.Qg2+?
- 1...Re4
- 2.Qxe4#
- 1...Rf3!
- 1...Re4
- 1.Sb6+?
- Keys
- 1.d4!
- threat
- 2.Sb6#
- 1...Be4+
- 2.Qxe4#
- 1...Rxd4
- 2.Sb4#
- 1...Bxd4
- 2.Sf6#
- 1...Sxd7
- 2.Qe6#
- 1...Rd3
- 2.Qe4#
- 1...Ra6
- 2.Sb4#
- 1...Bd3
- 2.Sc3#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(d);N_GUARD,XS(D)::QAB1(G)
- R(d);N_GUARD::S(D),XR(d)
- R(d);OGATE::R(A)+P(E)DCHECK,XR(d)
- R(d);S_CUTB(i)::S(D)
- R(d);N_GUARD,XB(H)::QAB1(G)
- B(i);N_GUARD::S(D),XB(i)
- B(i);S_CUTR(d)::QAB1(G)
- B(i);N_GUARD::S(I),XB(i)
- S(h);N_GUARD::QAB1(G),XS(h)
- S(h);N_GUARD,XS(I)::QAB1(G)
- S(h);N_GUARD::QAB1(G)
- Tries
- Try
- S(I);CHECK
- Vars
- K(e);P-FLIGHT::QAR2(G),XP(f)
- Refutation
- K(e);P-FLIGHT
- Try
- B(F);XR(d)
- Threat
- DUALS(2)
- Vars
- R(c);P_SPINR(c),XP(E)::QAB1(G)
- B(a);XS(D)::QAB1(G)
- B(a);P_SPINB(a),XP(E)::QAB1(G)
- S(h);XQ(G)::S(D)
- R(c);::S(D)
- B(i);::S(D)
- S(g);::S(D)
- Refutation
- R(c);
- Try
- B(H);
- Threat
- S(I)
- Vars
- S(h);N_GUARD,XS(I)::QAB1(G)
- R(d);S_CUTB(i)::S(D)
- B(i);S_CUTR(d)::QAB1(G)
- Refutation
- R(c);
- Try
- R(A);
- Threat
- B(F)
- Vars
- R(d);N_GUARD,XB(H)::QAB1(G)
- R(d);OGATE::P(E),XR(d)
- B(i);N_GUARD::S(D),XB(i)
- Refutation
- B(a);
- Try
- R(B);CHECK
- Refutation
- B(i);XR(B)
- Try
- Q(G);CHECK
- Refutation
- S(g);XQ(G)
- Try
- Q(G);CHECK
- Vars
- S(h);N_GUARD,P_SPINS(h)::QAB1(G),XS(h)
- Refutation
- S(g);XQ(G)
- Try
- Q(G);CHECK
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAB1(G),XR(d)
- Refutation
- R(c);P_SPINR(c)
- Try
- Actual
- P(E);
- Threat
- S(I)
- Vars
- B(a);CHECK,N_GUARD::QAB1(G),XB(a)
- R(d);N_GUARD,P_SPINR(d),XP(E)::S(D)
- B(i);N_GUARD,P_SPINB(i),XP(E)::S(I)
- S(h);N_GUARD,XS(I)::QAB1(G)
- R(c);S_CUTB(a)::QAB1(G)
- R(d);N_GUARD::S(D)
- B(a);S_CUTR(c)::S(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).