MESON Chess Problem Database
Problem Display
PID: 261144 (8/3Rp1Kb/4p3/2p1k3/4PppN/pP1R4/P1B5/1n2Q3 w - - 0 1)
Lobusov, Andrey Jakovlevic
3rd Prize, Neue Zurcher Zeitung, 1981
#2
9 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bf5
- 2.exf5#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...g3
- 2.Sf3#
- 1...Bf5
- Tries
- 1.Rd1?
- 1...Bxe4
- 2.Qxe4#
- 1...f3
- 2.Qg3#
- 1...Bf5
- 2.exf5#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sc3
- 2.Qxc3#
- 1...g3
- 2.Sf3#
- 1...c4
- 2.Qa5#
- 1...Sd2!
- 1...Bxe4
- 1.Rc3?
- threat
- 2.Rxc5#
- 1...Sxc3
- 2.Qxc3#
- 1...f3
- 2.Qg3#
- 1...c4!
- threat
- 1.Re3?
- 1...Bxe4
- 2.Rxe4#
- 1...fxe3
- 2.Qg3#
- 1...f3
- 2.Qg3#
- 1...c4
- 2.Qa5#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...g3
- 2.Sf3#
- 1...Bf5!
- 1...Bxe4
- 1.Rf3?
- 1...Bxe4
- 2.Qxe4#
- 1...gxf3
- 2.Sxf3#
- 1...c4
- 2.Qa5#
- 1...Bf5
- 2.exf5#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...g3!
- 1...Bxe4
- 1.Rg3?
- 1...Bxe4
- 2.Qxe4#
- 1...fxg3
- 2.Qxg3#
- 1...c4
- 2.Qa5#
- 1...Bf5
- 2.exf5#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...f3!
- 1...Bxe4
- 1.R3d6?
- 1...Bxe4
- 2.Qxe4#
- 1...f3
- 2.Qg3#
- 1...c4
- 2.Qa5#
- 1...Bf5
- 2.exf5#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...g3
- 2.Sf3#
- 1...exd6!
- 1...Bxe4
- 1.Qc3+?
- 1...Kxe4
- 2.Rd1#
- 2.Rd2#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.R3d5#
- 2.R3d6#
- 2.Qe1#
- 1...Sxc3!
- 1...Kxe4
- 1.Rd1?
- Keys
- 1.Rh3!
- 1...Bxe4
- 2.Qxe4#
- 1...gxh3
- 2.Sf3#
- 1...f3
- 2.Qg3#
- 1...c4
- 2.Qa5#
- 1...Bf5
- 2.exf5#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...g3
- 2.Sf3#
- 1...Bxe4
- 1.Rh3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- B(i);OGATE::QAR(A)+P(F),XB(i)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(d);N_GUARD::S(G)
- Tries
- Try
- R(E);
- Vars
- B(i);OGATE,P_SPINB(i),XP(F)::QAR1(A),XB(i)
- P(c);OGATEB::QAB(A)
- B(i);OGATE::QAR(A)+P(F),XB(i)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- S(a);N_GUARD::QAB(A),XS(a)
- P(d);N_GUARD::S(G)
- P(e);OGATEB::QAR(A)
- Refutation
- S(a);
- Try
- R(E);
- Threat
- R(E),XP(e)
- Vars
- S(a);OGATE,XR(E)::QAB(A),XS(a)
- P(c);OGATEB::QAB(A)
- Refutation
- P(e);
- Try
- R(E);
- Vars
- B(i);OGATE,P_SPINB(i),XP(F)::R1(E),XB(i)
- P(c);OGATEB,XR(E)::QAB(A)
- P(c);OGATEB::QAB(A)
- P(e);OGATEB::QAR(A)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- P(d);N_GUARD::S(G)
- Refutation
- B(i);
- Try
- R(E);
- Vars
- B(i);OGATE,P_SPINB(i),XP(F)::QAR1(A),XB(i)
- P(d);XR(E)::S(G),XP(d)
- P(e);OGATEB::QAR(A)
- B(i);OGATE::QAR(A)+P(F),XB(i)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- P(d);
- Try
- R(E);
- Vars
- B(i);OGATE,P_SPINB(i),XP(F)::QAR1(A),XB(i)
- P(c);OGATE,XR(E)::QAB(A),XP(c)
- P(e);OGATEB::QAR(A)
- B(i);OGATE::QAR(A)+P(F),XB(i)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- P(c);
- Try
- R(E);
- Vars
- B(i);OGATE,P_SPINB(i),XP(F)::QAR1(A),XB(i)
- P(c);OGATEB::QAB(A)
- P(e);OGATEB::QAR(A)
- B(i);OGATE::QAR(A)+P(F),XB(i)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- P(d);N_GUARD::S(G)
- Refutation
- P(h);XR(E)
- Try
- Q(A);CHECK
- Refutation
- S(a);XQ(A)
- Try
- Actual
- R(E);
- Vars
- B(i);OGATE,P_SPINB(i),XP(F)::QAR1(A),XB(i)
- P(d);N_GUARD,XR(E)::S(G)
- P(c);OGATEB::QAB(A)
- P(e);OGATEB::QAR(A)
- B(i);OGATE::QAR(A)+P(F),XB(i)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- P(d);N_GUARD::S(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).