MESON Chess Problem Database
Problem Display
PID: 261162 (2r2b2/B4P1K/5R1p/1P1kNB2/3P2R1/4p2r/1N2Q3/7b w - - 0 1)
Ahues, Herbert Siegfried Oskar
Neue Zurcher Zeitung, 1979
#2
11 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rf3
- 2.Be4#
- 1...Rc4
- 2.Qxc4#
- 1...Ra8
- 2.Qc4#
- 1...Rb8
- 2.Qc4#
- 1...Rd8
- 2.Qc4#
- 1...Re8
- 2.Qc4#
- 1...Be4
- 2.Bxe4#
- 1...Bc5
- 2.Qc4#
- 1...Bd6
- 2.Be6#
- 1...Rf3
- Tries
- 1.Sa4?
- threat
- 2.Sb6#
- 1...Rb8
- 2.Sc3#
- 2.Qc4#
- 2.Qa2#
- 1...Be4
- 2.Bxe4#
- 1...Bc5
- 2.Sc3#
- 2.Qc4#
- 2.Qa2#
- 1...Rc6!
- threat
- 1.Sbc4?
- threat
- 2.Sb6#
- 2.Be6#
- 1...Rxc4
- 2.Qxc4#
- 1...Rb8
- 2.Be6#
- 1...Re8
- 2.Sb6#
- 1...Be4
- 2.Bxe4#
- 1...Bc5
- 2.Be6#
- 1...Rc6!
- threat
- 1.Sed3?
- threat
- 2.Sf4#
- 1...Rf3
- 2.Be4#
- 1...Rc5
- 2.Sb4#
- 1...Bd6
- 2.Be6#
- 1...Bc5!
- threat
- 1.Sf3?
- threat
- 2.Be4#
- 1...Re8
- 2.Qc4#
- 1...Bxf3!
- threat
- 1.Sec4?
- threat
- 2.Sb6#
- 2.Be6#
- 1...Rxc4
- 2.Qxc4#
- 1...Rb8
- 2.Be6#
- 1...Re8
- 2.Sb6#
- 1...Be4
- 2.Bxe4#
- 1...Bc5
- 2.Be6#
- 1...Rc6!
- threat
- 1.Sg6?
- threat
- 2.Sf4#
- 1...Rf3
- 2.Be4#
- 1...Bc5
- 2.Qc4#
- 1...Bd6
- 2.Be6#
- 1...Rc5!
- threat
- 1.Sd7?
- threat
- 2.Sb6#
- 1...Rb8
- 2.Qc4#
- 1...Be4
- 2.Bxe4#
- 1...Bc5
- 2.Qc4#
- 1...Rc6!
- threat
- 1.Bc5?
- threat
- 2.Be6#
- 2.Qc4#
- 1...Bxc5
- 2.Qc4#
- 1...Rc6
- 2.Qc4#
- 1...Re8
- 2.Qc4#
- 1...Be4
- 2.Bxe4#
- 2.Qc4#
- 1...Rxc5!
- threat
- 1.Rc6?
- threat
- 2.Be6#
- 2.Qc4#
- 1...Re8
- 2.Qc4#
- 1...Be4
- 2.Bxe4#
- 2.Qc4#
- 1...Bd6
- 2.Qc4#
- 1...Rxc6!
- threat
- 1.Qf3+?
- 1...Rxf3
- 2.Be4#
- 1...Bxf3!
- 1...Rxf3
- 1.Qg2+?
- 1...Rf3
- 2.Be4#
- 1...Bxg2!
- 1...Rf3
- 1.Sa4?
- Keys
- 1.Sbd3!
- threat
- 2.Sf4#
- 1...Rf3
- 2.Be4#
- 1...Rc5
- 2.Sb4#
- 1...Bc5
- 2.Qa2#
- threat
- 1.Sbd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(c);S_CUTB(a)::B(G)
- R(f);N_GUARD::QAB1(B),XR(f)
- R(f);N_GUARD::QAB1(B)
- B(a);N_GUARD,P_PINB(G)::B(G),XB(a)
- B(g);S_CUTR(f)::QAB1(B)
- B(g);SBLOCK::B(G)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- B(a);N_GUARD,P_PINB(G)::B(G),XB(a)
- Refutation
- R(f);
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- R(f);OGATE,XS(A)::QAB1(B),XR(f)
- R(f);::B(G)
- R(f);::S(A)
- B(a);N_GUARD,P_PINB(G)::B(G),XB(a)
- B(g);::B(G)
- Refutation
- R(f);
- Try
- S(F);
- Threat
- S(F)
- Vars
- R(c);S_CUTB(a)::B(G)
- R(f);S_CUTB(g)::S(F)
- B(g);SBLOCK::B(G)
- Refutation
- B(g);
- Try
- S(F);
- Threat
- B(G)
- Vars
- R(f);N_GUARD::QAB1(B)
- Refutation
- B(a);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(f);OGATE,XS(F)::QAB1(B),XR(f)
- R(f);::B(G)
- R(f);::S(F)
- B(a);N_GUARD,P_PINB(G)::B(G),XB(a)
- B(g);::B(G)
- Refutation
- R(f);
- Try
- S(F);
- Threat
- S(F)
- Vars
- R(c);S_CUTB(a)::B(G)
- B(g);S_CUTR(f)::QAB1(B)
- B(g);SBLOCK::B(G)
- Refutation
- R(f);
- Try
- S(F);
- Threat
- S(F)
- Vars
- R(f);N_GUARD::QAB1(B)
- B(a);N_GUARD,P_PINB(G)::B(G),XB(a)
- B(g);S_CUTR(f)::QAB1(B)
- Refutation
- R(f);
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- B(g);XB(I)::QAB1(B)
- R(f);::QAB1(B)
- Refutation
- R(f);XB(I)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- R(f);::QAB1(B)
- B(g);::QAB1(B)
- Refutation
- R(f);XR(H)
- Try
- Q(B);CHECK
- Vars
- R(c);XQ(B)::B(G)
- Refutation
- B(a);XQ(B)
- Try
- Q(B);CHECK
- Vars
- R(c);P_SPINR(c)::B(G)
- Refutation
- B(a);XQ(B)
- Try
- Actual
- S(A);
- Threat
- S(A)
- Vars
- R(c);S_CUTB(a)::B(G)
- R(f);S_CUTB(g)::S(A)
- B(g);S_CUTR(f)::QAB(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).