MESON Chess Problem Database
Problem Display
PID: 272638 (Kb2b3/4p1N1/PP1kPn2/3r3R/B2r3q/2Q1N3/8/3R2B1 w - - 0 1)
Eriksson, Ivar
Schackvarlden, 1938
#2
11 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Rxa4
- 2.Sef5#
- 1...Rb4
- 2.Sef5#
- 1...Rc4
- 2.Sef5#
- 1...Re4
- 2.Sef5#
- 1...Rg4
- 2.Sef5#
- 1...Ra5
- 2.Sc4#
- 1...Rc5
- 2.Qxc5#
- 1...Ba7
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- 1...Bc6+
- 2.Qxc6#
- 1...Bg6
- 2.Qc6#
- 1...Bf7
- 2.Qc6#
- 1...Sd7
- 2.Qc6#
- 1...Rxa4
- Tries
- 1.Kxb8?
- threat
- 2.Qc7#
- 1...Rc4
- 2.Sef5#
- 1...Rc5
- 2.Qxc5#
- 1...Bc6
- 2.Qxc6#
- 1...Sd7+!
- threat
- 1.Sc4+?
- 1...Rxc4
- 2.Qe5#
- 1...Kc5!
- 1...Rxc4
- 1.Sxe8+?
- 1...Sxe8
- 2.Qc6#
- 1...Kxe6!
- 1...Sxe8
- 1.Rxd5+?
- 1...Rxd5
- 2.Sef5#
- 1...Sxd5!
- 1...Rxd5
- 1.Qb4+?
- 1...Rc5
- 2.Sc4#
- 2.Qxc5#
- 1...Rxb4!
- 1...Rc5
- 1.Qa3+?
- 1...Rc5
- 2.Sc4#
- 2.Qxc5#
- 1...Rb4!
- 1...Rc5
- 1.Kxb8?
- Keys
- 1.a7!
- threat
- 2.axb8Q#
- 2.axb8B#
- 1...Bc6+
- 2.Qxc6#
- 1...Qxh5
- 2.axb8Q#
- 2.axb8B#
- 1...Rxd1
- 2.axb8Q#
- 2.axb8B#
- 1...Rxa4
- 2.Sef5#
- 1...Rxh5
- 2.axb8Q#
- 2.axb8B#
- 1...Bxa7
- 2.Qc7#
- 1...Bxa4
- 2.axb8Q#
- 2.axb8B#
- 1...Bxh5
- 2.axb8Q#
- 2.axb8B#
- 1...Sxh5
- 2.axb8Q#
- 2.axb8B#
- 1...Qg5
- 2.axb8Q#
- 2.axb8B#
- 1...Rc4
- 2.Sef5#
- 1...Rf5
- 2.axb8Q#
- 2.axb8B#
- 1...Rg5
- 2.axb8Q#
- 2.axb8B#
- 1...Qe1
- 2.axb8Q#
- 2.axb8B#
- 1...Qf2
- 2.axb8Q#
- 2.axb8B#
- 1...Qg3
- 2.axb8Q#
- 2.axb8B#
- 1...Qh1
- 2.axb8Q#
- 2.axb8B#
- 1...Qh2
- 2.axb8Q#
- 2.axb8B#
- 1...Qh3
- 2.axb8Q#
- 2.axb8B#
- 1...Qe4
- 2.axb8Q#
- 2.axb8B#
- 1...Qf4
- 2.axb8Q#
- 2.axb8B#
- 1...Qg4
- 2.axb8Q#
- 2.axb8B#
- 1...Rd2
- 2.axb8Q#
- 2.axb8B#
- 1...Rd3
- 2.axb8Q#
- 2.axb8B#
- 1...Rb4
- 2.Sef5#
- 2.axb8Q#
- 2.axb8B#
- 1...Re4
- 2.Sef5#
- 2.axb8Q#
- 2.axb8B#
- 1...Rf4
- 2.axb8Q#
- 2.axb8B#
- 1...Rg4
- 2.Sef5#
- 2.axb8Q#
- 2.axb8B#
- 1...Ra5
- 2.Sc4#
- 1...Rb5
- 2.axb8Q#
- 2.axb8B#
- 1...Rc5
- 2.Qxc5#
- 1...Re5
- 2.axb8Q#
- 2.axb8B#
- 1...Bc7
- 2.Qxc7#
- 1...Bb5
- 2.axb8Q#
- 2.axb8B#
- 1...Bg6
- 2.Qc6#
- 2.axb8Q#
- 2.axb8B#
- 1...Bd7
- 2.axb8Q#
- 2.axb8B#
- 1...Bf7
- 2.Qc6#
- 2.axb8Q#
- 2.axb8B#
- 1...Se4
- 2.axb8Q#
- 2.axb8B#
- 1...Sg4
- 2.axb8Q#
- 2.axb8B#
- 1...Sd7
- 2.Qc6#
- 1...Sh7
- 2.axb8Q#
- 2.axb8B#
- 1...Sg8
- 2.axb8Q#
- 2.axb8B#
- threat
- 1.a7!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(a);P_PINP(G),P_SPINR(c),XB(E)::S(D)
- R(a);P_SPINR(c)::S(D)
- R(c);P_PINP(G),P_SPINR(a)::S(D)
- R(c);N_GUARD,P_SPINR(a)::QAB1(C),XR(c)
- B(g);N_GUARD::QAB1(C)
- B(g);N_GUARD::QAB1(C),XB(g)
- B(h);CHECK,N_GUARD::QAR1(C),XB(h)
- B(h);N_GUARD::QAR1(C)
- S(e);S_CUTB(h)::QAR1(C)
- Tries
- Try
- K(K);P-FLIGHT,XB(g)
- Threat
- QAB1(C)
- Vars
- R(a);P_SPINR(c)::S(D)
- R(c);N_GUARD,P_SPINR(a)::QAB1(C),XR(c)
- B(h);N_GUARD::QAR1(C),XB(h)
- Refutation
- S(e);CHECK
- Try
- S(D);CHECK
- Vars
- R(a);OGATE,P_SPINR(c),XS(D)::QAB1(C)
- Refutation
- K(d);P_SPINR(a),S_FLIGHT
- Try
- S(J);CHECK,XB(h)
- Vars
- S(e);XS(J)::QAR1(C)
- Refutation
- K(d);P-FLIGHT,XP(I)
- Try
- R(F);CHECK,XR(c)
- Vars
- R(a);P_SPINR(a),XR(F)::S(D)
- Refutation
- S(e);XR(F)
- Try
- Q(C);CHECK
- Refutation
- R(a);P_SPINR(c),XQ(C)
- Try
- Q(C);CHECK
- Refutation
- R(a);P_SPINR(a)
- Try
- Actual
- P(G);
- Threat
- PXB(g)=Q
- Vars
- B(h);CHECK,N_GUARD::QAR1(C),XB(h)
- Q(b);XR(F)::PXB(g)=Q
- R(a);XR(A)::PXB(g)=Q
- R(a);P_PINP(G),P_SPINR(c),XB(E)::S(D)
- R(c);P_SPINR(a),XR(F)::PXB(g)=Q
- B(g);N_GUARD,XP(G)::QAB1(C)
- B(h);XB(E)::PXB(g)=Q
- B(h);XR(F)::PXB(g)=Q
- S(e);XR(F)::PXB(g)=Q
- Q(b);::PXB(g)=Q
- R(a);P_SPINR(c)::S(D)
- R(c);P_SPINR(a)::PXB(g)=Q
- R(a);::PXB(g)=Q
- R(a);P_SPINR(c)::PXB(g)=Q
- R(c);P_PINP(G),P_SPINR(a)::S(D)
- R(c);N_GUARD,P_SPINR(a)::QAB1(C),XR(c)
- B(g);N_GUARD::QAB1(C),XB(g)
- B(h);::PXB(g)=Q
- S(e);::PXB(g)=Q
- S(e);S_CUTB(h)::QAR1(C)
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).