MESON Chess Problem Database
Problem Display
PID: 178151 (1q4n1/4NbQ1/3B3n/2P3RP/1r2pp1p/r3k3/7N/1B1RK3 w - - 0 1)
Weissauer, Hermann
Schach-Echo, 1977
#2
10 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qc3#
- 1...Ra2
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Raa4
- 2.Qc3#
- 1...Ra5
- 2.Qc3#
- 1...Ra6
- 2.Qc3#
- 1...Ra7
- 2.Qc3#
- 1...Ra8
- 2.Qc3#
- 1...Rxb1
- 2.Qd4#
- 1...Rb2
- 2.Qd4#
- 1...Rb3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Rb5
- 2.Qd4#
- 1...Rb6
- 2.Qd4#
- 1...Rb7
- 2.Qd4#
- 1...Bb3
- 2.Qc3#
- 1...Bc4
- 2.Qd4#
- 1...Bd5
- 2.Sxd5#
- 1...Bxh5
- 2.Sd5#
- 1...Bg6
- 2.Sd5#
- 1...Be8
- 2.Sd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...f3
- 2.Sf1#
- 1...Ra1
- Tries
- 1.Rg2?
- threat
- 2.Re2#
- 1...Bxh5
- 2.Sd5#
- 1...Ra2
- 2.Qc3#
- 1...Rb2
- 2.Qd4#
- 1...Bc4
- 2.Qd4#
- 1...f3
- 2.Sf1#
- 2.Qg5#
- 1...Qb5!
- threat
- 1.Rg3+?
- 1...fxg3
- 2.Qg5#
- 1...f3
- 2.Sf1#
- 2.Qg5#
- 1...hxg3!
- 1...fxg3
- 1.Rgd5?
- threat
- 2.Qg1#
- 1...Ra2
- 2.Qc3#
- 1...Rb2
- 2.Qd4#
- 1...Sg4
- 2.Sf5#
- 1...f3
- 2.Sf1#
- 2.Qg5#
- 1...Bg6!
- threat
- 1.Rf5?
- threat
- 2.Qg1#
- 1...Ra2
- 2.Qc3#
- 1...Rb2
- 2.Qd4#
- 1...Bg6
- 2.Sd5#
- 1...f3
- 2.Sf1#
- 2.Qg5#
- 1...Sg4!
- threat
- 1.Qb2?
- threat
- 2.Qc1#
- 2.Qd2#
- 2.Qe2#
- 2.Qf2#
- 1...Qxd6
- 2.Qe2#
- 2.Qf2#
- 1...Bxh5
- 2.Sd5#
- 2.Qc1#
- 2.Qd2#
- 2.Qf2#
- 1...Qb5
- 2.Qc1#
- 2.Qd2#
- 2.Qf2#
- 1...Ra2
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 2.Qd2#
- 2.Qe2#
- 2.Qf2#
- 1...Rd3
- 2.Qf2#
- 1...Rc4
- 2.Qd2#
- 2.Qe2#
- 2.Qf2#
- 1...Rd4
- 2.Qxd4#
- 2.Qe2#
- 2.Qf2#
- 1...Bc4
- 2.Qc1#
- 2.Qd4#
- 2.Qd2#
- 2.Qf2#
- 1...Sg4
- 2.Sf5#
- 2.Qc1#
- 2.Qd2#
- 2.Qe2#
- 1...f3
- 2.Sf1#
- 2.Qc1#
- 2.Qd2#
- 2.Qf2#
- 1...Rxb2!
- threat
- 1.Qe5?
- threat
- 2.Qxf4#
- 1...Rd3
- 2.Rxd3#
- 1...f3
- 2.Sf1#
- 2.Qf4#
- 1...Qxd6!
- threat
- 1.Rg2?
- Keys
- 1.Re5!
- threat
- 2.Qg1#
- 1...f3
- 2.Qg5#
- 1...Ra2
- 2.Rd3#
- 1...Rb2
- 2.Rxe4#
- 1...Bg6
- 2.Sd5#
- 1...Sg4
- 2.Sf5#
- threat
- 1.Re5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 19
- Sets
- R(a);N_GUARD::QAR2(J)
- R(a);N_GUARD::QAR2(J),XR(a)
- R(c);N_GUARD,P_PINR(B),XB(A)::QAB1(J)
- R(c);N_GUARD::QAB1(J)
- R(c);N_GUARD::QAB1(J),XR(c)
- B(h);S_CUTR(a)::QAR2(J)
- B(h);S_CUTR(c)::QAB1(J)
- B(h);N_GUARD::S(I),XB(h)
- B(h);N_GUARD,XP(G)::S(I)
- B(h);N_GUARD::S(I)
- S(g);N_GUARD::S(I)
- S(g);N_GUARD::S(I),XS(g)
- P(e);SBLOCK::S(D)
- Tries
- Try
- R(F);
- Threat
- R1(F)
- Vars
- B(h);N_GUARD,XP(G)::S(I)
- R(a);N_GUARD::QAR2(J)
- R(c);N_GUARD::QAB1(J)
- B(h);S_CUTR(c)::QAB1(J)
- Refutation
- Q(i);
- Try
- R(F);CHECK
- Vars
- P(e);S_CUTP(f),XR(F)::QAB(J)
- Refutation
- P(f);XR(F)
- Try
- R(F);
- Threat
- QAB(J)
- Vars
- R(a);N_GUARD::QAR2(J)
- R(c);N_GUARD::QAB1(J)
- S(g);N_GUARD::S(I)
- Refutation
- B(h);
- Try
- R(F);
- Threat
- QAB(J)
- Vars
- R(a);N_GUARD::QAR2(J)
- R(c);N_GUARD::QAB1(J)
- B(h);N_GUARD::S(I)
- Refutation
- S(g);
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- R(a);N_GUARD::QAR2(J)
- R(a);::QAB1(J)
- Refutation
- R(c);XQ(J)
- Try
- Q(J);P_PINP(d)
- Threat
- QAB1(J),XP(e)
- Vars
- R(a);N_GUARD::R1(B),XR(a)
- Refutation
- Q(i);XB(H)
- Try
- Actual
- R(F);P_PINP(d)
- Threat
- QAB(J)
- Vars
- P(e);OGATEB::QAB(J)
- R(a);N_GUARD::R1(B)
- R(c);N_GUARD::R1(F),XP(d)
- B(h);N_GUARD::S(I)
- S(g);N_GUARD::S(I)
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).