MESON Chess Problem Database
Problem Display
PID: 195291 (8/4B2p/7K/2p1k1N1/Q1n2NP1/7P/3P4/8 w - - 0 1)
van Eelde, Antonie Clarus Johannes
Haagsche Courant, 1899
#2
8 + 4
| 15601 | Albrecht-Leiss-Degener Collection | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Bf6#
- 1...Kxf4
- 2.Bd6#
- 1...Sb2
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sxd2
- 2.Sf7#
- 1...Sa3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Se3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa5
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sb6
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sd6
- 2.Sf3#
- 1...Kd4
- Tries
- 1.Kh5?
- 1...Kd4
- 2.Bf6#
- 1...Kxf4
- 2.Bd6#
- 1...Sxd2
- 2.Sf7#
- 1...Sb2
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Se3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa5
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sb6
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sd6
- 2.Sf3#
- 1...h6!
- 1...Kd4
- 1.Kxh7?
- 1...Kd4
- 2.Bf6#
- 1...Sxd2
- 2.Sf7#
- 1...Sb2
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Se3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa5
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sb6
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sd6
- 2.Sf3#
- 1...Kxf4!
- 1...Kd4
- 1.Bxc5?
- 1...Kxf4
- 2.Bd6#
- 1...Sxd2
- 2.Qd4#
- 1...Sb2
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Sb6
- 2.Qd4#
- 1...Sd6
- 2.Qd4#
- 1...Kf6!
- 1...Kxf4
- 1.Qc6?
- threat
- 2.Qe4#
- 2.Qf6#
- 1...Kd4
- 2.Sf3#
- 2.Qe4#
- 2.Qd5#
- 2.Qxc5#
- 1...Sxd2
- 2.Qd6#
- 2.Qf6#
- 1...Sd6
- 2.Qxd6#
- 1...Kxf4!
- threat
- 1.Qd7?
- threat
- 2.Sd3#
- 1...Sd6
- 2.Qxd6#
- 1...Sb2
- 2.Qd6#
- 1...Kxf4!
- threat
- 1.Qb4?
- 1...Kd4
- 2.Bf6#
- 2.Qc3#
- 2.Qxc5#
- 1...Kxf4
- 2.Bd6#
- 1...Sxd2
- 2.Sf7#
- 1...Sb2
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Se3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa5
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sb6
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sd6
- 2.Sf3#
- 1...cxb4!
- 1...Kd4
- 1.h4?
- 1...Kd4
- 2.Bf6#
- 1...Sxd2
- 2.Sf7#
- 1...Sb2
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Se3
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sa5
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sb6
- 2.Sf3#
- 2.Sf7#
- 2.Qe4#
- 1...Sd6
- 2.Sf3#
- 1...Kxf4!
- 1...Kd4
- 1.Kh5?
- Keys
- 1.Bd8!
- 1...Kd4
- 2.Bf6#
- 1...Kxf4
- 2.Bc7#
- 1...Kd6
- 2.Sf7#
- 1...Sxd2
- 2.Sf7#
- 1...Sb2
- 2.Sf7#
- 1...Sa3
- 2.Sf7#
- 1...Se3
- 2.Sf7#
- 1...Sa5
- 2.Sf7#
- 1...Sb6
- 2.Sf7#
- 1...Sd6
- 2.Sf3#
- 1...Kd4
- 1.Bd8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- K(c);P_SPINS(a),S_FLIGHT::B(H)
- K(c);P_SPINS(a),S_FLIGHT,XS(D)::B(H)
- S(a);XP(A)::S(F)
- S(a);::S(F)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- K(c);P_SPINS(a),S_FLIGHT::B(H)
- K(c);P_SPINS(a),S_FLIGHT,XS(D)::B(H)
- S(a);XP(A)::S(F)
- S(a);::S(F)
- Refutation
- P(d);
- Try
- K(G);P-FLIGHT,XP(d)
- Vars
- K(c);P_SPINS(a),S_FLIGHT::B(H)
- S(a);XP(A)::S(F)
- S(a);::S(F)
- Refutation
- K(c);P_SPINS(a),S_FLIGHT,XS(D)
- Try
- B(H);XP(b)
- Vars
- K(c);P_SPINS(a),S_FLIGHT,XS(D)::B(H)
- S(a);OGATE,XP(A)::QAB1(C)
- S(a);OGATE::QAB1(C)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAB1(C),XS(a)
- Refutation
- K(c);S_FLIGHT,XS(D)
- Try
- Q(C);
- Threat
- S(D)
- Vars
- S(a);N_GUARD::QAB1(C),XS(a)
- S(a);N_GUARD::QAB1(C)
- Refutation
- K(c);S_FLIGHT,XS(D)
- Try
- Q(C);
- Vars
- K(c);P_SPINS(a),S_FLIGHT,XS(D)::B(H)
- S(a);XP(A)::S(F)
- S(a);::S(F)
- Refutation
- P(b);XQ(C)
- Try
- P(B);
- Vars
- K(c);P_SPINS(a),S_FLIGHT::B(H)
- S(a);XP(A)::S(F)
- S(a);::S(F)
- Refutation
- K(c);P_SPINS(a),S_FLIGHT,XS(D)
- Try
- Actual
- B(H);
- Vars
- K(c);P_SPINS(a),S_FLIGHT::B(H)
- K(c);P_SPINS(a),S_FLIGHT,XS(D)::B(H)
- K(c);S_FLIGHT::S(F)
- S(a);XP(A)::S(F)
- S(a);::S(F)
- S(a);SBLOCK::S(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).