MESON Chess Problem Database
Problem Display
PID: 119824 (7B/2Q5/1KPP1P2/4k3/4nNp1/2P3P1/8/1B6 w - - 0 1)
Ferber, Eugene
Deutsche Schachzeitung, 1903
#2
10 + 3
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sc5
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Sxd6
- 2.Qe7#
- 2.f7#
- 1...Sxf6
- 2.Qe7#
- 2.d7#
- 1...Sd2
- Tries
- 1.Ka5?
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sxd6
- 2.Qe7#
- 2.f7#
- 1...Sxf6
- 2.Qe7#
- 2.d7#
- 1...Sd2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sc5
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Kf5!
- 1...Sxc3
- 1.Ka6?
- 1...Kf5
- 2.Qa5#
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sxd6
- 2.Qe7#
- 2.f7#
- 1...Sxf6
- 2.Qe7#
- 2.d7#
- 1...Sd2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Sc5+!
- 1...Kf5
- 1.Bc2?
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sxd6
- 2.Qe7#
- 2.f7#
- 1...Sxf6
- 2.Qe7#
- 2.d7#
- 1...Sd2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sc5
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Kf5!
- 1...Sxc3
- 1.Bd3?
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sxd6
- 2.Qe7#
- 2.f7#
- 1...Sxf6
- 2.Qe7#
- 2.d7#
- 1...Sd2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sc5
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Kf5!
- 1...Sxc3
- 1.Bg7?
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sxd6
- 2.Qe7#
- 2.f7#
- 1...Sxf6
- 2.Qe7#
- 2.d7#
- 1...Sd2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sc5
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Kf5!
- 1...Sxc3
- 1.Qb8?
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sxd6
- 2.f7#
- 1...Sxf6
- 2.d7#
- 1...Sd2
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.d7#
- 2.f7#
- 1...Sc5
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Kf5!
- 1...Sxc3
- 1.Qd7?
- threat
- 2.Qe6#
- 1...Sxc3
- 2.f7#
- 1...Sc5
- 2.f7#
- 1...Sg5
- 2.f7#
- 1...Sxg3!
- threat
- 1.d7+?
- 1...Sd6
- 2.f7#
- 1...Kf5!
- 1...Sd6
- 1.f7+?
- 1...Sf6
- 2.Qe7#
- 2.d7#
- 1...Kf5!
- 1...Sf6
- 1.Ka5?
- Keys
- 1.Ka7!
- 1...Kf5
- 2.Qa5#
- 1...Sxc3
- 2.f7#
- 1...Sxg3
- 2.d7#
- 1...Sxd6
- 2.Qe7#
- 2.f7#
- 1...Sxf6
- 2.Qe7#
- 2.d7#
- 1...Sd2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sf2
- 2.Qe7#
- 2.d7#
- 2.f7#
- 1...Sc5
- 2.d7#
- 2.f7#
- 1...Sg5
- 2.d7#
- 2.f7#
- 1...Kf5
- 1.Ka7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- K(E);P-FLIGHT
- Vars
- K(c);P-FLIGHT,P_SPINS(a)::QAR(I)
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
- Refutation
- S(a);CHECK
- Try
- B(A);
- Vars
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- B(A);
- Vars
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- B(J);
- Vars
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- Q(I);
- Vars
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
- S(a);N_GUARD,P_SPINS(a),XP(G)::B(J)+P(H)
- S(a);N_GUARD,P_SPINS(a),XP(H)::QAB(I)+P(G)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD::B(J)+P(H)
- Refutation
- S(a);XP(C)
- Try
- P(G);CHECK
- Vars
- S(a);P_SPINS(a)::B(J)+P(H)
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- P(H);CHECK
- Refutation
- K(c);P-FLIGHT,P_SPINS(a)
- Try
- Actual
- K(E);S_FLIGHT
- Vars
- K(c);P-FLIGHT,P_SPINS(a)::QAR(I)
- S(a);N_GUARD,XP(B)::B(J)+P(H)
- S(a);N_GUARD,XP(C)::QAB(I)+P(G)
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).