MESON Chess Problem Database
Problem Display
PID: 262799 (2R4B/1n2r3/1b6/nN5R/4k2P/1r6/bPpQ2P1/2K4N w - - 0 1)
Lehen, Ludovit
4th Prize, Szachy, 1978
#2
10 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2
- 2.Sg3#
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rg3
- 2.Sxg3#
- 1...Rb4
- 2.Sg3#
- 2.Sc3#
- 1...Rxb5
- 2.Sg3#
- 1...Re5
- 2.Rxe5#
- 1...Rc7
- 2.Re5#
- 1...Rd7
- 2.Re5#
- 1...Rf7
- 2.Re5#
- 1...Rh7
- 2.Re5#
- 1...Re8
- 2.Rxe8#
- 1...Bf2
- 2.Sxf2#
- 1...Bd4
- 2.Qxd4#
- 1...Bc7
- 2.Sf2#
- 2.Qd4#
- 1...Bd8
- 2.Sf2#
- 2.Qd4#
- 1...Sc5
- 2.Sf2#
- 2.Sd6#
- 2.Qd4#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Rxb2
- Tries
- 1.Sd4?
- threat
- 2.Sf2#
- 1...Bxd4
- 2.Qxd4#
- 1...Re5
- 2.Rxe5#
- 1...Rf3
- 2.gxf3#
- 1...Rf7
- 2.Re5#
- 1...Re3!
- threat
- 1.Bc3?
- threat
- 2.Sg3#
- 1...Rxc3
- 2.Sxc3#
- 1...Rg7
- 2.Re5#
- 1...Bf2
- 2.Sxf2#
- 1...Bc7
- 2.Sf2#
- 2.Qd4#
- 1...Be3!
- threat
- 1.Bd4?
- threat
- 2.Sf2#
- 1...Bxd4
- 2.Qxd4#
- 1...Re3
- 2.Qxe3#
- 1...Re5
- 2.Rxe5#
- 1...Rf7
- 2.Re5#
- 1...Rf3!
- threat
- 1.Rhc5?
- threat
- 2.Sf2#
- 2.Qd4#
- 1...Sxc5
- 2.Sd6#
- 1...Re3
- 2.Qd4#
- 1...Re5
- 2.Rxe5#
- 1...Rd3
- 2.Sf2#
- 1...Rf3
- 2.Qd4#
- 1...Rb4
- 2.Sf2#
- 2.Sg3#
- 2.Sc3#
- 1...Rd7
- 2.Sf2#
- 2.Re5#
- 1...Rf7
- 2.Re5#
- 2.Qd4#
- 1...Sc6
- 2.Sf2#
- 1...Bxc5!
- threat
- 1.Rc3?
- threat
- 2.Sg3#
- 1...Rxc3
- 2.Sxc3#
- 1...Be3
- 2.Qxe3#
- 1...Bf2
- 2.Sxf2#
- 1...Bc7
- 2.Sf2#
- 2.Qe3#
- 2.Qd4#
- 1...Rg7!
- threat
- 1.Rc4+?
- 1...Bd4
- 2.Sf2#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sxc4!
- 1...Bd4
- 1.Rcc5?
- threat
- 2.Sf2#
- 2.Qd4#
- 1...Re3
- 2.Qd4#
- 1...Rd3
- 2.Sf2#
- 1...Rf3
- 2.Qd4#
- 1...Rb4
- 2.Sf2#
- 2.Sg3#
- 2.Sc3#
- 1...Rd7
- 2.Sf2#
- 2.Rce5#
- 2.Rhe5#
- 1...Rf7
- 2.Rce5#
- 2.Rhe5#
- 2.Qd4#
- 1...Sc6
- 2.Sf2#
- 1...Bxc5!
- threat
- 1.Qd5+?
- 1...Ke3
- 2.Qf3#
- 1...Kf4!
- 1...Ke3
- 1.Sd4?
- Keys
- 1.Rf8!
- threat
- 2.Rf4#
- 1...Re3
- 2.Sf2#
- 1...Rf3
- 2.gxf3#
- 1...Rf7
- 2.Re5#
- 1...Be3
- 2.Sg3#
- 1...Bc7
- 2.Sf2#
- 2.Qd4#
- threat
- 1.Rf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 12
- Sets
- R(c);N_GUARD::S(G),XR(c)
- R(c);N_GUARD::S(B),XR(c)
- R(c);N_GUARD,XS(G)::S(B)
- R(h);N_GUARD::R1(H),XR(h)
- R(h);N_GUARD::R1(H)
- R(h);OGATEB::R(I),XR(h)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::QAR1(D),XB(f)
- S(g);N_GUARD::S(G),XS(g)
- S(g);N_GUARD::S(G)
- Tries
- Try
- S(G);
- Threat
- S(B)
- Vars
- B(f);OGATE,XS(G)::QAR1(D),XB(f)
- R(h);N_GUARD::R1(H),XR(h)
- R(c);OGATE::P(E),XR(c)
- R(h);N_GUARD::R1(H)
- Refutation
- R(c);
- Try
- B(J);
- Threat
- S(B)
- Vars
- R(c);XB(J)::S(G),XR(c)
- R(h);N_GUARD::R1(H)
- B(f);N_GUARD::S(B),XB(f)
- Refutation
- B(f);P_PINQ(D)
- Try
- B(J);
- Threat
- S(B)
- Vars
- B(f);OGATE,XB(J)::QAR1(D),XB(f)
- R(c);N_GUARD::QAR1(D),XR(c)
- R(h);N_GUARD::R1(H),XR(h)
- R(h);N_GUARD::R1(H)
- Refutation
- R(c);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD,XR(H)::S(G)
- R(c);::QAR1(D)
- R(h);N_GUARD::R1(H),XR(h)
- R(c);::S(B)
- S(e);::S(B)
- Refutation
- B(f);XR(H)
- Try
- R(I);
- Threat
- S(B)
- Vars
- R(c);XR(I)::S(G),XR(c)
- B(f);N_GUARD,P_PINQ(D)::QAR1(D),XB(f)
- B(f);N_GUARD::S(B),XB(f)
- Refutation
- R(h);
- Try
- R(I);CHECK
- Refutation
- S(e);XR(I)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- R(c);::QAR1(D)
- R(c);::S(B)
- S(e);::S(B)
- Refutation
- B(f);XR(I)
- Try
- Q(D);CHECK
- Vars
- K(d);OGATE,P-FLIGHT::QAR1(D)
- Refutation
- K(d);P-FLIGHT
- Try
- Actual
- R(I);
- Threat
- R1(I)
- Vars
- R(c);S_CUTB(f)::S(B)
- R(c);OGATE::P(E),XR(c)
- R(h);N_GUARD::R1(H)
- B(f);P_PINQ(D),S_CUTR(c)::S(B)
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).