MESON Chess Problem Database
Problem Display
PID: 110863 (3N2b1/6br/3pq2n/1PpkPpN1/2R5/1K6/5B2/Q7 w - - 0 1)
Rukhlis, Efim Naumovich
Leninska plemya, 1970
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qa8#
- 1...Bxe5
- 2.Qh1#
- 1...dxe5
- 2.Qd1#
- 1...Qxe5
- Tries
- 1.Sf3?
- threat
- 2.Qd1#
- 2.Qa8#
- 1...Qxe5
- 2.Qa8#
- 1...dxe5
- 2.Qd1#
- 1...Qd7
- 2.Qd1#
- 1...Qf7
- 2.Qd1#
- 1...Qc8
- 2.Qd1#
- 1...Qe7
- 2.Qd1#
- 1...Qe8
- 2.Qd1#
- 1...Bf6
- 2.Qd1#
- 1...Bf8
- 2.Qd1#
- 1...Bh8
- 2.Qd1#
- 1...Bxe5!
- threat
- 1.Sgxe6?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Bxe5
- 2.Qh1#
- 1...dxe5
- 2.Qd1#
- 1...Bf6
- 2.Sf4#
- 1...Bf8
- 2.Sf4#
- 1...Bh8
- 2.Sf4#
- 1...f4
- 2.Sxf4#
- 2.Sc7#
- 1...Bxe6!
- threat
- 1.Sc6?
- threat
- 2.Qd1#
- 2.Qh1#
- 1...Bxe5
- 2.Qh1#
- 1...dxe5
- 2.Qd1#
- 1...Sg4
- 2.Qd1#
- 1...Sf7
- 2.Qd1#
- 1...f4
- 2.Qd1#
- 1...Qxe5!
- threat
- 1.Sdxe6?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Bxe5
- 2.Qh1#
- 1...dxe5
- 2.Qd1#
- 1...Bf6
- 2.Sf4#
- 1...Bf8
- 2.Sf4#
- 1...Bh8
- 2.Sf4#
- 1...f4
- 2.Sxf4#
- 2.Sc7#
- 1...Bxe6!
- threat
- 1.Bg3?
- threat
- 2.Qd1#
- 2.Qh1#
- 2.Qa8#
- 1...Qxe5
- 2.Qa8#
- 1...Bxe5
- 2.Qh1#
- 1...dxe5
- 2.Qd1#
- 1...Qd7
- 2.Qd1#
- 2.Qh1#
- 1...Qf7
- 2.Qd1#
- 2.Qh1#
- 1...Qc8
- 2.Qd1#
- 2.Qh1#
- 1...Qe7
- 2.Qd1#
- 2.Qh1#
- 1...Qe8
- 2.Qd1#
- 2.Qh1#
- 1...Bf6
- 2.Qd1#
- 2.Qh1#
- 1...Bf8
- 2.Qd1#
- 2.Qh1#
- 1...Bh8
- 2.Qd1#
- 2.Qh1#
- 1...Sg4
- 2.Qd1#
- 2.Qa8#
- 1...Sf7
- 2.Qd1#
- 2.Qa8#
- 1...f4!
- threat
- 1.Bd4?
- threat
- 2.Qh1#
- 2.Qa8#
- 1...Qxe5
- 2.Qa8#
- 1...Bxe5
- 2.Qh1#
- 1...cxd4
- 2.Qxd4#
- 1...Qd7
- 2.Qh1#
- 1...Qf7
- 2.Qh1#
- 1...Qc8
- 2.Qh1#
- 1...Qe7
- 2.Qh1#
- 1...Qe8
- 2.Qh1#
- 1...Bf6
- 2.Qh1#
- 1...Bf8
- 2.Qh1#
- 1...Bh8
- 2.Qh1#
- 1...Sg4
- 2.Qa8#
- 1...Sf7
- 2.Qa8#
- 1...f4
- 2.Qa8#
- 1...dxe5!
- threat
- 1.Bxc5?
- threat
- 2.Qd4#
- 1...Qxe5
- 2.Qa8#
- 1...Bxe5
- 2.Qh1#
- 1...dxe5
- 2.Qd1#
- 1...dxc5!
- threat
- 1.Rc2?
- threat
- 2.Rd2#
- 1...Qxe5
- 2.Qa8#
- 1...Bxe5
- 2.Qh1#
- 1...c4+!
- threat
- 1.Rd4+?
- 1...cxd4
- 2.Qxd4#
- 1...Kxe5+!
- 1...cxd4
- 1.Sf3?
- Keys
- 1.Sh3!
- threat
- 2.Sf4#
- 1...Qxe5
- 2.Qa8#
- 1...Bxe5
- 2.Qh1#
- 1...dxe5
- 2.Qd1#
- 1...f4
- 2.Sxf4#
- threat
- 1.Sh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(e);SBLOCK,XP(F)::QAB(A)
- B(g);SBLOCK,XP(F)::QAB(A)
- P(d);SBLOCK,XP(F)::QAR(A)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(F)::QAB(A)
- P(d);XP(F)::QAR(A)
- Q(e);::QAR(A)
- B(g);::QAR(A)
- Refutation
- B(g);XP(F)
- Try
- S(G);XQ(e)
- Threat
- DUALS(2)
- Vars
- B(g);SBLOCK,XP(F)::QAB(A)
- P(d);SBLOCK,XP(F)::QAR(A)
- B(g);::S(G)
- Refutation
- B(i);XS(G)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- B(g);XP(F)::QAB(A)
- P(d);XP(F)::QAR(A)
- S(f);::QAR(A)
- P(c);::QAR(A)
- Refutation
- Q(e);XP(F)
- Try
- S(H);XQ(e)
- Threat
- DUALS(2)
- Vars
- B(g);SBLOCK,XP(F)::QAB(A)
- P(d);SBLOCK,XP(F)::QAR(A)
- B(g);::S(H)
- Refutation
- B(i);XS(H)
- Try
- B(B);
- Threat
- DUALS(3)
- Vars
- Q(e);XP(F)::QAB(A)
- B(g);XP(F)::QAB(A)
- P(d);XP(F)::QAR(A)
- Refutation
- P(c);
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(F)::QAB(A)
- B(g);XP(F)::QAB(A)
- P(a);OGATE,XB(B)::QAR1(A),XP(a)
- Q(e);::QAB(A)
- B(g);::QAB(A)
- S(f);::QAB(A)
- P(c);::QAB(A)
- Refutation
- P(d);XP(F)
- Try
- B(B);XP(a)
- Threat
- QAR1(A)
- Vars
- Q(e);SBLOCK,XP(F)::QAB(A)
- B(g);SBLOCK,XP(F)::QAB(A)
- P(d);SBLOCK,XP(F)::QAR(A)
- Refutation
- P(d);XB(B)
- Try
- R(D);
- Threat
- R(D)
- Vars
- Q(e);SBLOCK,XP(F)::QAB(A)
- B(g);SBLOCK,XP(F)::QAB(A)
- Refutation
- P(a);CHECK
- Try
- R(D);CHECK
- Vars
- P(a);OGATE,XR(D)::QAR1(A),XP(a)
- Refutation
- K(b);CHECK,P-FLIGHT,XP(F)
- Try
- Actual
- S(G);
- Threat
- S(G)
- Vars
- Q(e);SBLOCK,XP(F)::QAB(A)
- B(g);SBLOCK,XP(F)::QAB(A)
- P(d);SBLOCK,XP(F)::QAR(A)
- P(c);::S(G),XP(c)
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).