MESON Chess Problem Database
Problem Display
PID: 4892 (8/n3pQ2/8/8/1p4p1/kBNp2Rp/1rbN3K/n1B5 w - - 0 1)
la Motte, BW
Illustrated London News, 1893
#2
7 + 10
| 3360 | Simple Two-move Themes | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Sxb1#
- 1...Bd1
- 2.Sb1#
- 1...Sxb3
- 2.Sc4#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...bxc3
- 2.Qxe7#
- 1...e5
- 2.Qxa7#
- 1...e6
- 2.Qxa7#
- 1...Bb1
- Tries
- 1.Kg1?
- 1...Bxb3
- 2.Sdb1#
- 1...Sxb3
- 2.Sc4#
- 1...bxc3
- 2.Qxe7#
- 1...Bb1
- 2.Sdxb1#
- 2.Scxb1#
- 1...Bd1
- 2.Sdb1#
- 2.Scb1#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...e5
- 2.Qxa7#
- 1...e6
- 2.Qxa7#
- 1...h2+!
- 1...Bxb3
- 1.Kh1?
- 1...Bxb3
- 2.Sdb1#
- 1...Sxb3
- 2.Sc4#
- 1...bxc3
- 2.Qxe7#
- 1...Bb1
- 2.Sdxb1#
- 2.Scxb1#
- 1...Bd1
- 2.Sdb1#
- 2.Scb1#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...e5
- 2.Qxa7#
- 1...e6
- 2.Qxa7#
- 1...h2!
- 1...Bxb3
- 1.Bxc2?
- threat
- 2.Sdb1#
- 2.Sc4#
- 2.Scb1#
- 2.Qa2#
- 1...Sxc2
- 2.Sdb1#
- 2.Qa2#
- 2.Qb3#
- 1...dxc2
- 2.Qa2#
- 1...b3
- 2.Qxe7#
- 1...Sb3
- 2.Sdb1#
- 2.Sc4#
- 2.Qxb3#
- 1...e6
- 2.Sdb1#
- 2.Sc4#
- 2.Qxa7#
- 1...bxc3!
- threat
- 1.Rxg4?
- 1...Sxb3
- 2.Sc4#
- 1...bxc3
- 2.Ra4#
- 2.Qxe7#
- 1...Bb1
- 2.Sxb1#
- 1...Bd1
- 2.Sb1#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...e5
- 2.Qxa7#
- 1...e6
- 2.Qxa7#
- 1...Bxb3!
- 1...Sxb3
- 1.Qd5?
- threat
- 2.Qa5#
- 1...Sxb3
- 2.Sc4#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Bxb3!
- threat
- 1.Qe6?
- threat
- 2.Qa6#
- 1...Sxb3
- 2.Sc4#
- 1...bxc3
- 2.Qxe7#
- 1...Sc6
- 2.Sb5#
- 1...Bxb3!
- threat
- 1.Qe8?
- threat
- 2.Qa4#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Bxb3!
- threat
- 1.Qxe7?
- threat
- 2.Qxa7#
- 1...Sxb3
- 2.Sc4#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Bxb3!
- threat
- 1.Qg7?
- 1...Sxb3
- 2.Sc4#
- 1...bxc3
- 2.Qxe7#
- 1...Bb1
- 2.Sxb1#
- 1...Bd1
- 2.Sb1#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...e5
- 2.Qxa7#
- 1...e6
- 2.Qxa7#
- 1...Bxb3!
- 1...Sxb3
- 1.Qh7?
- 1...Sxb3
- 2.Sc4#
- 1...bxc3
- 2.Qxe7#
- 1...Bb1
- 2.Sxb1#
- 1...Bd1
- 2.Sb1#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...e5
- 2.Qxa7#
- 1...e6
- 2.Qxa7#
- 1...Bxb3!
- 1...Sxb3
- 1.Kg1?
- Keys
- 1.Qf2!
- threat
- 2.Qxa7#
- 1...Bxb3
- 2.Sdb1#
- 1...Sxb3
- 2.Sc4#
- 1...bxc3
- 2.Qc5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- threat
- 1.Qf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- B(c);N_GUARD,P_PINS(B)::S(E),XB(c)
- B(c);N_GUARD,P_PINS(B)::S(E)
- S(a);SBLOCK,XB(D)::S(B)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- P(g);OGATEB,XS(E)::QAB(G),XP(j)
- P(j);OGATE::QAR(G),XS(i)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- B(c);N_GUARD,XB(D)::S(B)
- S(a);SBLOCK,XB(D)::S(B)
- P(g);OGATEB,XS(E)::QAB(G),XP(j)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- P(j);OGATE::QAR(G),XS(i)
- Refutation
- P(f);CHECK
- Try
- K(C);P-FLIGHT
- Vars
- B(c);N_GUARD,XB(D)::S(B)
- S(a);SBLOCK,XB(D)::S(B)
- P(g);OGATEB,XS(E)::QAB(G),XP(j)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- P(j);OGATE::QAR(G),XS(i)
- Refutation
- P(f);
- Try
- B(D);XB(c)
- Threat
- DUALS(4)
- Vars
- P(e);XB(D)::QAR1(G)
- P(g);OGATEB::QAB(G),XP(j)
- Refutation
- P(g);XS(E)
- Try
- R(F);XP(h)
- Vars
- S(a);SBLOCK,XB(D)::S(B)
- B(c);N_GUARD,P_PINS(B)::S(E),XB(c)
- B(c);N_GUARD,P_PINS(B)::S(E)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- P(j);OGATE::QAR(G),XS(i)
- Refutation
- B(c);P_PINS(B),XB(D)
- Try
- Q(G);
- Threat
- QAR2(G)
- Vars
- S(a);SBLOCK,XB(D)::S(B)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- Refutation
- B(c);P_PINS(B),XB(D)
- Try
- Q(G);
- Threat
- QAR(G)
- Vars
- S(a);SBLOCK,XB(D)::S(B)
- P(g);OGATEB,XS(E)::QAB(G),XP(j)
- S(i);N_GUARD::S(E)
- Refutation
- B(c);P_PINS(B),XB(D)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- Refutation
- B(c);P_PINS(B),XB(D)
- Try
- Q(G);P_PINP(g),XP(j)
- Threat
- QAR(G),XS(i)
- Vars
- S(a);SBLOCK,XB(D)::S(B)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- Refutation
- B(c);P_PINS(B),XB(D)
- Try
- Q(G);
- Vars
- S(a);SBLOCK,XB(D)::S(B)
- P(g);OGATEB,XS(E)::QAB(G),XP(j)
- B(c);N_GUARD,P_PINS(B)::S(E),XB(c)
- B(c);N_GUARD,P_PINS(B)::S(E)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- P(j);OGATE::QAR(G),XS(i)
- Refutation
- B(c);P_PINS(B),XB(D)
- Try
- Q(G);
- Vars
- S(a);SBLOCK,XB(D)::S(B)
- P(g);OGATEB,XS(E)::QAB(G),XP(j)
- B(c);N_GUARD,P_PINS(B)::S(E),XB(c)
- B(c);N_GUARD,P_PINS(B)::S(E)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
- P(j);OGATE::QAR(G),XS(i)
- Refutation
- B(c);P_PINS(B),XB(D)
- Try
- Actual
- Q(G);
- Threat
- QAR(G),XS(i)
- Vars
- B(c);N_GUARD,SBLOCK,XB(D)::S(B)
- S(a);SBLOCK,XB(D)::S(B)
- P(g);OGATEB,XS(E)::QAB(G)
- S(i);N_GUARD::S(E),XS(i)
- S(i);N_GUARD::S(E)
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).