MESON Chess Problem Database
Problem Display
PID: 132245 (4Nbq1/6r1/2p2Qp1/2NkB1Kb/1Pp5/2P1n1P1/8/2nr4 w - - 0 1)
Groeneveld, Cornelis
1st HM., Knobi's Knobelecke, 1991-1992
#2
8 + 11
| 6114 | Problemschach-Jahrbuch (1994) | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Qh7
- 2.Qe6#
- 1...Qh8
- 2.Qe6#
- 1...Rc7
- 2.Sxc7#
- 1...Re7
- 2.Qd6#
- 1...Rf7
- 2.Qe6#
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Sc7#
- 1...Qe6
- Tries
- 1.Bd4?
- threat
- 2.Qe5#
- 1...Rxd4
- 2.Qxd4#
- 1...Qe6
- 2.Qxe6#
- 1...Re7
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Sc7#
- 1...Sg4
- 2.Qf3#
- 1...Sd3!
- threat
- 1.Bf4?
- threat
- 2.Qe5#
- 1...Qe6
- 2.Qxe6#
- 1...Re7
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Sc7#
- 1...Sd3
- 2.Qd4#
- 1...Sg4!
- threat
- 1.Bd6?
- threat
- 2.Qe5#
- 1...Bxd6
- 2.Qxd6#
- 1...Qe6
- 2.Qxe6#
- 1...Be7
- 2.Sc7#
- 1...Sd3
- 2.Qd4#
- 1...Sg4
- 2.Qf3#
- 1...Re7!
- threat
- 1.Bc7?
- threat
- 2.Qe5#
- 1...Rxc7
- 2.Sxc7#
- 1...Qe6
- 2.Qxe6#
- 1...Re7
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Sd3
- 2.Qd4#
- 1...Sg4
- 2.Qf3#
- 1...Be7!
- threat
- 1.Qf3+?
- 1...Kxe5
- 2.Qe4#
- 1...Bxf3!
- 1...Kxe5
- 1.Qxc6+?
- 1...Kxe5
- 2.Qe4#
- 1...Kxc6!
- 1...Kxe5
- 1.Bd4?
- Keys
- 1.Bb8!
- threat
- 2.Qe5#
- 1...Qe6
- 2.Qxe6#
- 1...Rc7
- 2.Sxc7#
- 1...Re7
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Sc7#
- 1...Sd3
- 2.Qd4#
- 1...Sg4
- 2.Qf3#
- threat
- 1.Bb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(k);N_GUARD::QAB1(G),XQ(k)
- Q(k);N_GUARD::QAB1(G)
- R(i);N_GUARD::S(H),XR(i)
- R(i);S_CUTB(j)::QAR1(G)
- R(i);S_CUTQ(k)::QAB1(G)
- B(j);N_GUARD::QAR1(G),XB(j)
- B(j);P_PINQ(G),S_CUTR(i)::S(H)
- Tries
- Try
- B(E);
- Threat
- QAR1(G)
- Vars
- R(b);OGATE,XB(E)::QAR1(G),XR(b)
- Q(k);N_GUARD::QAB1(G),XQ(k)
- R(i);S_CUTB(j)::QAR1(G)
- B(j);N_GUARD::QAR1(G),XB(j)
- B(j);P_PINQ(G),S_CUTR(i)::S(H)
- S(c);S_CUTB(f)::QAB(G)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- QAR1(G)
- Vars
- Q(k);N_GUARD::QAB1(G),XQ(k)
- R(i);S_CUTB(j)::QAR1(G)
- B(j);N_GUARD::QAR1(G),XB(j)
- B(j);P_PINQ(G),S_CUTR(i)::S(H)
- S(a);S_CUTR(b)::QAR1(G)
- Refutation
- S(c);
- Try
- B(E);
- Threat
- QAR1(G)
- Vars
- B(j);OGATE,XB(E)::QAR1(G),XB(j)
- Q(k);N_GUARD::QAB1(G),XQ(k)
- B(j);P_PINQ(G),S_CUTR(i)::S(H)
- S(a);S_CUTR(b)::QAR1(G)
- S(c);S_CUTB(f)::QAB(G)
- Refutation
- R(i);
- Try
- B(E);
- Threat
- QAR1(G)
- Vars
- R(i);XB(E)::S(H),XR(i)
- Q(k);N_GUARD::QAB1(G),XQ(k)
- R(i);S_CUTB(j)::QAR1(G)
- B(j);N_GUARD::QAR1(G),XB(j)
- S(a);S_CUTR(b)::QAR1(G)
- S(c);S_CUTB(f)::QAB(G)
- Refutation
- B(j);P_PINQ(G)
- Try
- Q(G);CHECK
- Vars
- K(e);P-FLIGHT,XB(E)::QAR1(G)
- Refutation
- B(f);XQ(G)
- Try
- Q(G);CHECK,XP(g)
- Vars
- K(e);OGATE,P-FLIGHT,XB(E)::QAR1(G)
- Refutation
- K(e);S_FLIGHT,XQ(G)
- Try
- Actual
- B(E);
- Threat
- QAR1(G)
- Vars
- Q(k);N_GUARD::QAB1(G),XQ(k)
- R(i);N_GUARD::S(H),XR(i)
- R(i);S_CUTB(j)::QAR1(G)
- B(j);N_GUARD::QAR1(G),XB(j)
- B(j);P_PINQ(G),S_CUTR(i)::S(H)
- S(a);S_CUTR(b)::QAR1(G)
- S(c);S_CUTB(f)::QAB(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).