MESON Chess Problem Database
Problem Display
PID: 209153 (8/1p2p3/1n2B3/2n2K2/1P1k1p2/4bQp1/1N1p2P1/3N4 w - - 0 1)
Groeneveld, Cornelis
Deutsche Schachblatter, 1983
#2
7 + 9
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Qc3#
- 1...Bf2
- 2.Qc3#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sca4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sxe6
- 2.Qe4#
- 1...Scd7
- 2.Qe4#
- 1...Sba4
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sbd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Bg1
- Tries
- 1.Sc3?
- threat
- 2.Se2#
- 2.Sb5#
- 1...d1Q
- 2.Sb5#
- 1...d1B
- 2.Sb5#
- 1...Kxc3!
- threat
- 1.Sa4?
- 1...Scxa4
- 2.Qe4#
- 1...Sxe6
- 2.Qe4#
- 1...Sbxa4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Bg1
- 2.Qc3#
- 1...Bf2
- 2.Qc3#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Scd7
- 2.Qe4#
- 1...Sc4
- 2.Qd5#
- 1...Sbd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Kd3!
- 1...Scxa4
- 1.Sc4?
- 1...Sxe6
- 2.Qe4#
- 1...Sxc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Bg1
- 2.Qc3#
- 1...Bf2
- 2.Qc3#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sca4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Scd7
- 2.Qe4#
- 1...Sba4
- 2.Qd5#
- 1...Sbd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Kd3!
- 1...Sxe6
- 1.Qc6?
- threat
- 2.Qxc5#
- 1...Sxe6
- 2.Qe4#
- 1...Sb3
- 2.Qe4#
- 2.Qc3#
- 1...Sd3
- 2.Qe4#
- 2.Qc3#
- 1...Sca4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 2.Qc3#
- 1...Scd7
- 2.Qe4#
- 2.Qc3#
- 1...Sba4
- 2.Qd5#
- 1...Sbd7
- 2.Qd5#
- 1...bxc6!
- threat
- 1.Qxf4+?
- 1...Se4
- 2.Qxe3#
- 2.Qe5#
- 2.Qxe4#
- 1...Bxf4!
- 1...Se4
- 1.bxc5?
- 1...Sc4
- 2.Qd5#
- 1...Bg1
- 2.Qc3#
- 1...Bf2
- 2.Qc3#
- 1...Sa4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Kxc5!
- 1...Sc4
- 1.Sc3?
- Keys
- 1.Qe2!
- 1...Sxe6
- 2.Qd3#
- 1...Sc4
- 2.Qxc4#
- 1...Bg1
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Sb3
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sca4
- 2.Qd3#
- 1...Se4
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Scd7
- 2.Qd3#
- 1...Sba4
- 2.Qc4#
- 1...Sd5
- 2.Qc4#
- 1...Sbd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...f3
- 2.Qxe3#
- 1...Sxe6
- 1.Qe2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 15
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(b);OGATE::QAB1(D)
- S(f);N_GUARD::QAR1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- S(f);N_GUARD,XB(G)::QAR1(D)
- S(g);N_GUARD::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- P(a);::S(A)
- Refutation
- K(d);P_SPINB(b),S_FLIGHT,XS(A)
- Try
- S(B);
- Vars
- S(f);N_GUARD,XS(B)::QAR1(D)
- S(f);N_GUARD,XB(G)::QAR1(D)
- S(g);N_GUARD,XS(B)::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- B(b);OGATE::QAB1(D)
- S(f);N_GUARD::QAR1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(d);P-FLIGHT,P_SPINB(b)
- Try
- S(B);
- Vars
- S(f);N_GUARD,XB(G)::QAR1(D)
- S(g);N_GUARD,XS(B)::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- B(b);OGATE::QAB1(D)
- S(f);N_GUARD::QAR1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(d);P-FLIGHT,P_SPINB(b)
- Try
- Q(D);
- Threat
- QAB1(D),XS(f)
- Vars
- S(f);N_GUARD,XB(G)::QAR1(D)
- S(f);N_GUARD::QAR1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- S(g);N_GUARD::QAR1(D)
- Refutation
- P(h);XQ(D)
- Try
- Q(D);CHECK,XP(e)
- Refutation
- B(b);XQ(D)
- Try
- P(E);XS(f)
- Vars
- S(g);N_GUARD::QAR1(D)
- B(b);OGATE::QAB1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- Refutation
- K(d);S_FLIGHT,XP(E)
- Try
- Actual
- Q(D);
- Vars
- S(f);N_GUARD,XB(G)::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- B(b);OGATE::QAB1(D)
- S(f);N_GUARD::QAR1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- S(g);N_GUARD::QAR1(D)
- P(e);N_GUARD::QAB1(D),XB(b)
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).