MESON Chess Problem Database
Problem Display
PID: 160539 (n1r1B2B/q4b2/2RP3R/1PNk2p1/pQ1p4/5P2/1P1pr1n1/6bK w - - 0 1)
Ahues, Herbert Siegfried Oskar
Die Schwalbe, 1971
#2
11 + 12
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qxc5
- 2.Qxc5#
- 1...Rf2
- 2.Qxd4#
- 1...Re3
- 2.Qxd4#
- 1...Re4
- 2.fxe4#
- 1...Rxc6
- 2.Bxc6#
- 1...Bh2
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...a3
- 2.Qb3#
- 1...Qxc5
- Tries
- 1.Sb3?
- threat
- 2.Qc4#
- 1...Rxc6
- 2.Bxc6#
- 1...Qc5
- 2.Qxc5#
- 1...Sb6
- 2.Qc5#
- 1...Se3!
- threat
- 1.Sd3?
- threat
- 2.Qc4#
- 1...Rxc6
- 2.Bxc6#
- 1...Qc5
- 2.Qxc5#
- 1...Sb6
- 2.Qc5#
- 1...Se3!
- threat
- 1.Sxa4?
- threat
- 2.Qb3#
- 2.Qc4#
- 1...Qxa4
- 2.Qc5#
- 1...Rxc6
- 2.Bxc6#
- 1...d1Q
- 2.Qc4#
- 1...d1B
- 2.Qc4#
- 1...Qc5
- 2.Qxc5#
- 1...Re3
- 2.Qc4#
- 1...Sb6
- 2.Qc5#
- 1...Se3!
- threat
- 1.Se4?
- threat
- 2.Qc4#
- 1...Rxc6
- 2.Bxc6#
- 1...Qc5
- 2.Bxf7#
- 2.Qxc5#
- 1...Sb6
- 2.Qc5#
- 1...Se3!
- threat
- 1.Sa6?
- threat
- 2.Qc4#
- 1...Rxc6
- 2.Bxc6#
- 1...Qc5
- 2.Qxc5#
- 1...Sb6
- 2.Qc5#
- 1...Se3!
- threat
- 1.Se6?
- threat
- 2.Qc4#
- 1...Rxc6
- 2.Bxc6#
- 1...Qc5
- 2.Qxc5#
- 1...Sb6
- 2.Qc5#
- 1...Se3!
- threat
- 1.Sd7?
- threat
- 2.Qc4#
- 1...Se3
- 2.Bxf7#
- 1...Qc5
- 2.Qxc5#
- 1...Sb6
- 2.Qc5#
- 1...Rxc6!
- threat
- 1.Bxf7+?
- 1...Re6
- 2.Bxe6#
- 1...Qxf7!
- 1...Re6
- 1.b3?
- threat
- 2.Qc4#
- 1...Qxc5
- 2.Qxc5#
- 1...axb3
- 2.Qxb3#
- 1...Se3
- 2.Qxd4#
- 1...Sb6!
- threat
- 1.Sb3?
- Keys
- 1.Sb7!
- threat
- 2.Qc4#
- 1...Rxc6
- 2.Bxc6#
- 1...Se3
- 2.Bxf7#
- 1...Qc5
- 2.Qxc5#
- 1...Sb6
- 2.Qc5#
- threat
- 1.Sb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(i);OGATE,XS(F)::QAR1(D),XQ(i)
- R(c);S_CUTB(a)::QAR1(D),XP(f)
- R(c);OGATE::P(C),XR(c)
- R(l);OGATE,XR(G)::B(J),XR(l)
- B(a);N_GUARD::QAR1(D),XP(f)
- S(d);S_CUTB(a)::QAR1(D),XP(f)
- P(e);N_GUARD::QAB(D)
- Tries
- Try
- S(F);
- Threat
- QAB1(D)
- Vars
- R(l);OGATE,XR(G)::B(J),XR(l)
- Q(i);N_GUARD::QAR1(D),XQ(i)
- S(k);S_CUTQ(i)::QAR1(D)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- QAB1(D)
- Vars
- R(l);OGATE,XR(G)::B(J),XR(l)
- Q(i);N_GUARD::QAR1(D),XQ(i)
- S(k);S_CUTQ(i)::QAR1(D)
- Refutation
- S(d);
- Try
- S(F);XP(e)
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,XS(F)::QAR1(D)
- R(l);OGATE,XR(G)::B(J),XR(l)
- P(b);::QAB1(D)
- Q(i);N_GUARD::QAR1(D),XQ(i)
- R(c);::QAB1(D)
- S(k);S_CUTQ(i)::QAR1(D)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- QAB1(D)
- Vars
- R(l);OGATE,XR(G)::B(J),XR(l)
- S(k);S_CUTQ(i)::QAR1(D)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- QAB1(D)
- Vars
- R(l);OGATE,XR(G)::B(J),XR(l)
- Q(i);N_GUARD::QAR1(D),XQ(i)
- S(k);S_CUTQ(i)::QAR1(D)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- QAB1(D)
- Vars
- R(l);OGATE,XR(G)::B(J),XR(l)
- Q(i);N_GUARD::QAR1(D),XQ(i)
- S(k);S_CUTQ(i)::QAR1(D)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- QAB1(D)
- Vars
- S(d);S_CUTR(c)::B(J),XB(j)
- Q(i);N_GUARD::QAR1(D),XQ(i)
- S(k);S_CUTQ(i)::QAR1(D)
- Refutation
- R(l);XR(G)
- Try
- B(J);CHECK,XB(j)
- Vars
- R(c);N_GUARD,P_SPINR(c)::B(J),XR(c)
- Refutation
- Q(i);XB(J)
- Try
- P(B);
- Threat
- QAB1(D)
- Vars
- Q(i);OGATE,XS(F)::QAR1(D),XQ(i)
- P(e);OGATE,XP(B)::QAB(D),XP(e)
- S(d);S_CUTB(a)::QAR1(D),XP(f)
- Refutation
- S(k);
- Try
- Actual
- S(F);
- Threat
- QAB1(D)
- Vars
- R(l);OGATE,XR(G)::B(J),XR(l)
- S(d);S_CUTR(c)::B(J),XB(j)
- Q(i);N_GUARD::QAR1(D),XQ(i)
- S(k);S_CUTQ(i)::QAR1(D)
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).