MESON Chess Problem Database
Problem Display
PID: 119915 (6n1/PNN5/2kP4/2P1pBb1/1p6/q4p2/p4Q2/2R3nK w - - 0 1)
Ferber, Eugene
Deutsches Wochenschach, 1905
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kxb7
- 2.c6#
- 1...Qxc1
- 2.Sa5#
- 1...Qb2
- 2.Sa5#
- 1...Qb3
- 2.Sa5#
- 1...Qc3
- 2.Sa5#
- 1...Qd3
- 2.Sa5#
- 1...Qe3
- 2.Sa5#
- 1...Qa5
- 2.Sxa5#
- 1...Bxc1
- 2.Sd8#
- 1...Bd2
- 2.Sd8#
- 1...Be3
- 2.Sd8#
- 1...Bf4
- 2.Sd8#
- 1...Bh6
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Sf6
- 2.Sd8#
- 1...Se7
- 2.Sd8#
- 1...Kxb7
- Tries
- 1.Bd7+?
- 1...Kxb7
- 2.c6#
- 1...Kxd7!
- 1...Kxb7
- 1.Qd4?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Kxb7
- 2.c6#
- 1...Qb3
- 2.Sa5#
- 1...Qd3
- 2.Sa5#
- 1...Qe3
- 2.Sa5#
- 2.Qd5#
- 1...Sf6
- 2.Sd8#
- 1...Se7
- 2.Sd8#
- 1...e4
- 2.Qxe4#
- 2.Qd5#
- 1...exd4!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 1...Qb3
- 2.Sa5#
- 1...Qd3
- 2.Sa5#
- 1...Qe3
- 2.Sa5#
- 1...Sf6
- 2.Sd8#
- 1...Se7
- 2.Sd8#
- 1...e4
- 2.Qxe4#
- 1...Kxb7!
- threat
- 1.Qd2?
- threat
- 2.Qd5#
- 1...Bxd2
- 2.Sd8#
- 1...Qb3
- 2.Sa5#
- 1...Qd3
- 2.Sa5#
- 1...Sf6
- 2.Sd8#
- 1...Se7
- 2.Sd8#
- 1...Kxb7!
- threat
- 1.a8Q?
- threat
- 2.Sa5#
- 2.Sd8#
- 1...Qa5
- 2.Sxa5#
- 2.Sd8#
- 1...Bd8
- 2.Sa5#
- 2.Sxd8#
- 1...Qxa8!
- threat
- 1.a8B?
- threat
- 2.Sa5#
- 2.Sd8#
- 1...Qa5
- 2.Sxa5#
- 2.Sd8#
- 1...Bd8
- 2.Sa5#
- 2.Sxd8#
- 1...Qxa8!
- threat
- 1.Bd7+?
- Keys
- 1.Qe3!
- threat
- 2.Qe4#
- 1...Kxb7
- 2.c6#
- 1...Qxe3
- 2.Sa5#
- 1...Bxe3
- 2.Sd8#
- 1...Qb3
- 2.Sa5#
- 1...Qd3
- 2.Sa5#
- 1...Sf6
- 2.Sd8#
- 1...Se7
- 2.Sd8#
- 1...e4
- 2.Qxe4#
- threat
- 1.Qe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- K(h);OGATE,S_FLIGHT,XS(H)::P(D)
- Q(c);N_GUARD,XR(A)::S(H)
- Q(c);N_GUARD::S(H)
- Q(c);N_GUARD::S(H),XQ(c)
- B(g);N_GUARD,XR(A)::S(H)
- B(g);N_GUARD::S(H)
- B(g);N_GUARD::S(H),XB(g)
- S(i);S_CUTB(g)::S(H)
- Tries
- Try
- B(E);CHECK
- Vars
- K(h);OGATE,S_FLIGHT,XS(H)::P(D)
- Refutation
- K(h);S_FLIGHT,XB(E)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- K(h);OGATE,S_FLIGHT,XS(H)::P(D)
- Q(c);N_GUARD::S(H)
- S(i);S_CUTB(g)::S(H)
- Refutation
- P(f);XQ(C)
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- Q(c);N_GUARD::S(H)
- S(i);S_CUTB(g)::S(H)
- P(f);::QAB(C),XP(f)
- Refutation
- K(h);S_FLIGHT,XS(H)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- B(g);N_GUARD,XQ(C)::S(H)
- Q(c);N_GUARD::S(H)
- S(i);S_CUTB(g)::S(H)
- Refutation
- K(h);S_FLIGHT,XS(H)
- Try
- P(G);
- Threat
- DUALS(2)
- Refutation
- Q(c);XQ(G)
- Try
- P(G);
- Threat
- DUALS(2)
- Refutation
- Q(c);XB(G)
- Try
- Actual
- Q(C);
- Threat
- QAB(C)
- Vars
- K(h);OGATE,S_FLIGHT,XS(H)::P(D)
- Q(c);N_GUARD,XQ(C)::S(H)
- B(g);N_GUARD,XQ(C)::S(H)
- Q(c);N_GUARD::S(H)
- S(i);S_CUTB(g)::S(H)
- P(f);::QAB(C),XP(f)
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).