MESON Chess Problem Database
Problem Display
PID: 30752 (2B2bQB/rpR1p2n/1p2P3/pN1k4/4p3/K2N4/4n3/8 w - - 0 1)
Berger, Johann Nepomuk
5. American Chess Congress, 1880
#2
8 + 10
| 5689 | The Chess Monthly (Hoffer) | 1880 |
| 5656 | Sammlung Leichterer Schachaufgaben I (Dufresne) | 1881 |
| 2638 | White to Play | 1913 |
SOLUTION
- SOUND
- Sets
- 1...Ra6
- 2.Bxb7#
- 1...Ra8
- 2.Bxb7#
- 1...Bh6
- 2.Qd8#
- 1...Bg7
- 2.Qd8#
- 1...Sc1
- 2.Sf4#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Qxg5#
- 1...Sf6
- 2.Qg5#
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Qg2#
- 1...a4
- 2.Sb4#
- 1...Ra6
- Tries
- 1.Kb2?
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Qg2#
- 1...Ra6
- 2.Bxb7#
- 1...Ra8
- 2.Bxb7#
- 1...Bh6
- 2.Qd8#
- 1...Sc1
- 2.Sf4#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Qxg5#
- 1...Sf6
- 2.Qg5#
- 1...a4
- 2.Sb4#
- 1...Bg7+!
- 1...exd3
- 1.Ka4?
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Qg2#
- 1...Ra6
- 2.Bxb7#
- 1...Ra8
- 2.Bxb7#
- 1...Bh6
- 2.Qd8#
- 1...Bg7
- 2.Qd8#
- 1...Sc1
- 2.Sf4#
- 1...Sg1
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Qxg5#
- 1...Sf6
- 2.Qg5#
- 1...Sc3+!
- 1...exd3
- 1.Sc3+?
- 1...Kd6
- 2.Be5#
- 1...Sxc3!
- 1...Kd6
- 1.Bd4?
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Qg2#
- 1...Sc1
- 2.Sf4#
- 1...Ra6
- 2.Bxb7#
- 1...Ra8
- 2.Bxb7#
- 1...Bh6
- 2.Qd8#
- 1...Bg7
- 2.Qd8#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Qxg5#
- 1...Sf6
- 2.Qg5#
- 1...a4
- 2.Sb4#
- 1...Sxd4!
- 1...exd3
- 1.Rc2?
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Qg2#
- 1...Sc1
- 2.Sf4#
- 1...Ra6
- 2.Bxb7#
- 1...Ra8
- 2.Bxb7#
- 1...Bh6
- 2.Qd8#
- 1...Bg7
- 2.Qd8#
- 1...Sg1
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Qxg5#
- 1...Sf6
- 2.Qg5#
- 1...a4
- 2.Sb4#
- 1...Sc3!
- 1...exd3
- 1.Rc3?
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Qg2#
- 1...Sc1
- 2.Sf4#
- 1...Ra6
- 2.Bxb7#
- 1...Ra8
- 2.Bxb7#
- 1...Bh6
- 2.Qd8#
- 1...Bg7
- 2.Qd8#
- 1...Sg1
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Qxg5#
- 1...Sf6
- 2.Qg5#
- 1...a4
- 2.Sb4#
- 1...Sxc3!
- 1...exd3
- 1.Rd7+?
- 1...Kc6
- 2.Sxa7#
- 1...Kc4!
- 1...Kc6
- 1.Qxh7?
- threat
- 2.Qf5#
- 2.Qh5#
- 1...exd3
- 2.Qf5#
- 2.Qh1#
- 1...Bh6
- 2.Qf5#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 2.Qf5#
- 1...e3
- 2.Qf5#
- 2.Qh1#
- 1...Bg7!
- threat
- 1.Qg3?
- threat
- 2.Qe5#
- 1...Sxg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Bg7!
- threat
- 1.Qg4?
- threat
- 2.Qf5#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Bg7!
- threat
- 1.Qg6?
- threat
- 2.Qf5#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Bg7!
- threat
- 1.Qg7?
- threat
- 2.Qe5#
- 1...Sf6
- 2.Qg5#
- 1...Bxg7!
- threat
- 1.Kb2?
- Keys
- 1.Bf6!
- 1...exf6+
- 2.e7#
- 1...Sxf6
- 2.Qg5#
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Qg2#
- 1...Sc1
- 2.Sf4#
- 1...Ra6
- 2.Bxb7#
- 1...Ra8
- 2.Bxb7#
- 1...Bh6
- 2.Qd8#
- 1...Bg7
- 2.Qd8#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Qxg5#
- 1...a4
- 2.Sb4#
- 1...exf6+
- 1.Bf6!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::B(F),XP(g)
- B(j);OGATE::QAR(G)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::QAR(G),XS(i)
- S(i);N_GUARD::QAR(G)
- P(b);OGATEB,XS(B)::QAB(G)
- P(b);OGATEB::QAB(G)
- P(c);N_GUARD::S(B)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- P(b);OGATEB,XS(B)::QAB(G)
- P(b);OGATEB::QAB(G)
- R(f);N_GUARD::B(F),XP(g)
- B(j);OGATE::QAR(G)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::QAR(G),XS(i)
- S(i);N_GUARD::QAR(G)
- P(c);N_GUARD::S(B)
- Refutation
- B(j);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- P(b);OGATEB,XS(B)::QAB(G)
- P(b);OGATEB::QAB(G)
- R(f);N_GUARD::B(F),XP(g)
- B(j);OGATE::QAR(G)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::QAR(G),XS(i)
- S(i);N_GUARD::QAR(G)
- Refutation
- S(a);CHECK
- Try
- S(C);CHECK
- Vars
- K(d);P-FLIGHT::B(H)
- Refutation
- S(a);XS(C)
- Try
- B(H);
- Vars
- P(b);OGATEB,XS(B)::QAB(G)
- P(b);OGATEB::QAB(G)
- S(a);N_GUARD::S(B)
- R(f);N_GUARD::B(F),XP(g)
- B(j);OGATE::QAR(G)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::QAR(G),XS(i)
- S(i);N_GUARD::QAR(G)
- P(c);N_GUARD::S(B)
- Refutation
- S(a);XB(H)
- Try
- R(E);
- Vars
- P(b);OGATEB,XS(B)::QAB(G)
- P(b);OGATEB::QAB(G)
- S(a);N_GUARD::S(B)
- R(f);N_GUARD::B(F),XP(g)
- B(j);OGATE::QAR(G)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::QAR(G),XS(i)
- S(i);N_GUARD::QAR(G)
- P(c);N_GUARD::S(B)
- Refutation
- S(a);
- Try
- R(E);
- Vars
- P(b);OGATEB,XS(B)::QAB(G)
- P(b);OGATEB::QAB(G)
- S(a);N_GUARD::S(B)
- R(f);N_GUARD::B(F),XP(g)
- B(j);OGATE::QAR(G)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::QAR(G),XS(i)
- S(i);N_GUARD::QAR(G)
- P(c);N_GUARD::S(B)
- Refutation
- S(a);XR(E)
- Try
- R(E);CHECK
- Vars
- K(d);S_FLIGHT::S(C),XR(f)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(G);XS(i)
- Threat
- DUALS(2)
- Vars
- B(j);::QAR2(G)
- S(a);N_GUARD::S(B)
- Refutation
- B(j);
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- S(a);N_GUARD,XQ(G)::S(B)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- B(j);
- Try
- Q(G);
- Threat
- QAR2(G)
- Vars
- S(a);N_GUARD::S(B)
- Refutation
- B(j);
- Try
- Q(G);
- Threat
- QAR2(G)
- Vars
- S(a);N_GUARD::S(B)
- Refutation
- B(j);
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- S(i);N_GUARD::QAR(G)
- Refutation
- B(j);XQ(G)
- Try
- Actual
- B(H);
- Vars
- P(h);CHECK,OGATE,XB(H)::QAB(G)+P(D)
- S(i);N_GUARD,XB(H)::QAR(G)
- P(b);OGATEB,XS(B)::QAB(G)
- P(b);OGATEB::QAB(G)
- S(a);N_GUARD::S(B)
- R(f);N_GUARD::B(F),XP(g)
- B(j);OGATE::QAR(G)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::QAR(G),XS(i)
- P(c);N_GUARD::S(B)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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