MESON Chess Problem Database
Problem Display
PID: 141175 (4n1N1/1p2N2p/pPp3pP/P1Q2PP1/p1B1kp2/P4p2/4nB1K/8 w - - 0 1)
de Thomaz, R
L'Echiquier, 1932
#2
12 + 11
| 14868 | Pirnie Collection | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...gxf5
- 2.Qxf5#
- 1...Sc1
- Tries
- 1.Kh1?
- 1...gxf5
- 2.Qxf5#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...Sg3+!
- 1...gxf5
- 1.Kh3?
- 1...gxf5
- 2.Qxf5#
- 1...Sc1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...Sg1+!
- 1...gxf5
- 1.Sxc6?
- threat
- 2.Qd5#
- 2.Qe5#
- 1...Sc3
- 2.Qe5#
- 1...Sf6
- 2.Sxf6#
- 2.Qe5#
- 1...Sc7
- 2.Sf6#
- 2.Qe5#
- 1...bxc6!
- threat
- 1.Ba2?
- threat
- 2.Bb1#
- 1...Sc1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Kd3!
- threat
- 1.Bb3?
- threat
- 2.Bc2#
- 1...Kd3
- 2.Qc2#
- 1...Sc1
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...axb3!
- threat
- 1.Bb5?
- 1...cxb5
- 2.Qd5#
- 1...gxf5
- 2.Qxf5#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...axb5!
- 1...cxb5
- 1.Bd5+?
- 1...Ke5
- 2.Bxf3#
- 2.Bxc6#
- 1...cxd5
- 2.Qxd5#
- 1...Kd3!
- 1...Ke5
- 1.Bxa6?
- 1...gxf5
- 2.Qxf5#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...bxa6!
- 1...gxf5
- 1.Qd6?
- threat
- 2.Bd3#
- 2.Qe6#
- 1...Sc1
- 2.Qd4#
- 2.Qe6#
- 1...Sd4
- 2.Qxd4#
- 1...Sc7
- 2.Sf6#
- 2.Bd3#
- 1...Sg7
- 2.Sf6#
- 2.Bd3#
- 1...Sxd6!
- threat
- 1.Qxc6+?
- 1...Ke5
- 2.Qd5#
- 2.Qe6#
- 1...bxc6!
- 1...Ke5
- 1.fxg6?
- threat
- 2.Qf5#
- 1...Sd6
- 2.Sf6#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sg7
- 2.Sf6#
- 1...hxg6!
- threat
- 1.Kh1?
- Keys
- 1.Sd5!
- 1...Ke5
- 2.Sc3#
- 2.Sdf6#
- 1...Kxf5
- 2.Sdf6#
- 1...cxd5
- 2.Qxd5#
- 1...gxf5
- 2.Qe7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.Sdf6#
- 1...Sf6
- 2.Sdxf6#
- 1...Sc7
- 2.Sdf6#
- 1...Sg7
- 2.Sdf6#
- 1...Ke5
- 1.Sd5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(k);N_GUARD::S(L)
- S(k);N_GUARD::S(L),XS(k)
- P(h);OGATE,XP(G)::QAB1(F),XP(h)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- P(h);OGATE,XP(G)::QAB1(F),XP(h)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(k);N_GUARD::S(L)
- S(k);N_GUARD::S(L),XS(k)
- Refutation
- S(a);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- P(h);OGATE,XP(G)::QAB1(F),XP(h)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(k);N_GUARD::S(L)
- S(k);N_GUARD::S(L),XS(k)
- Refutation
- S(a);CHECK
- Try
- S(K);XP(g)
- Threat
- DUALS(2)
- Vars
- S(a);::QAR1(F)
- Refutation
- P(i);XS(K)
- Try
- B(D);
- Threat
- B(D)
- Vars
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- K(d);S_FLIGHT
- Try
- B(D);
- Threat
- B(D)
- Vars
- K(d);S_FLIGHT::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- P(c);XB(D)
- Try
- B(D);
- Vars
- P(g);N_GUARD,XB(D)::QAB1(F)
- P(h);OGATE,XP(G)::QAB1(F),XP(h)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(k);N_GUARD::S(L)
- S(k);N_GUARD::S(L),XS(k)
- Refutation
- P(f);XB(D)
- Try
- B(D);CHECK
- Vars
- P(g);OGATE,XB(D)::QAB1(F),XP(g)
- Refutation
- K(d);S_FLIGHT
- Try
- B(D);XP(f)
- Vars
- P(h);OGATE,XP(G)::QAB1(F),XP(h)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(k);N_GUARD::S(L)
- S(k);N_GUARD::S(L),XS(k)
- Refutation
- P(i);XB(D)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- S(k);XQ(F)
- Try
- Q(F);CHECK,XP(g)
- Refutation
- P(i);XQ(F)
- Try
- P(G);XP(h)
- Threat
- QAB1(F)
- Vars
- S(k);N_GUARD::S(L)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- P(j);XP(G)
- Try
- Actual
- S(K);
- Vars
- K(d);S_FLIGHT,XP(G)::QAR(F)+S(K)
- P(g);OGATE,XS(K)::QAB1(F),XP(g)
- P(h);SBLOCK,XP(G)::QAR(F)
- S(a);N_GUARD::S(K)
- S(a);N_GUARD::S(K),XS(a)
- S(k);N_GUARD::S(K)
- S(k);N_GUARD::S(K),XS(k)
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).