MESON Chess Problem Database
Problem Display
PID: 161468 (Q3b3/pK1pR2p/8/2pN2R1/3kN1P1/n1p1p1B1/nP2B1Pq/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 1979
#2
11 + 11
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bh5
- 2.Qh8#
- 1...Bg6
- 2.Qh8#
- 1...Bf7
- 2.Qh8#
- 1...Sc1
- 2.bxc3#
- 1...Sb4
- 2.bxc3#
- 1...c4
- 2.Qxa7#
- 1...Bh5
- Tries
- 1.Sd2?
- threat
- 2.Sb3#
- 2.Sf3#
- 2.Re4#
- 1...Qxg3
- 2.Sb3#
- 2.Re4#
- 1...Qxg2
- 2.Sb3#
- 1...exd2
- 2.Bf2#
- 1...c4
- 2.Qxa7#
- 1...Bg6
- 2.Sb3#
- 2.Sf3#
- 2.Qh8#
- 1...Sc1
- 2.Sf3#
- 2.Re4#
- 2.bxc3#
- 1...cxd2!
- threat
- 1.Sf2?
- threat
- 2.Re4#
- 1...exf2
- 2.Bxf2#
- 1...c4
- 2.Qxa7#
- 1...Bg6
- 2.Qh8#
- 1...Qxg2!
- threat
- 1.Sxc5?
- threat
- 2.Sb3#
- 1...Kxc5
- 2.Qxa7#
- 1...Sc1!
- threat
- 1.Sd6?
- threat
- 2.Re4#
- 1...c4
- 2.Qxa7#
- 1...Bg6
- 2.Qh8#
- 1...Qxg2!
- threat
- 1.Sef6?
- threat
- 2.Re4#
- 1...Qxg2
- 2.Be5#
- 1...c4
- 2.Qxa7#
- 1...Bg6!
- threat
- 1.Sdxc3?
- threat
- 2.Rd5#
- 1...Sxc3
- 2.bxc3#
- 1...Qh5
- 2.Be5#
- 1...Bf7
- 2.Qh8#
- 1...d5
- 2.Rxd5#
- 1...Sb4!
- threat
- 1.Sb4?
- threat
- 2.Rd5#
- 1...Sxb4
- 2.bxc3#
- 1...cxb4
- 2.Qxa7#
- 1...Bf7
- 2.Qh8#
- 1...d5
- 2.Rxd5#
- 1...Qh5!
- threat
- 1.Sf4?
- threat
- 2.Rd5#
- 1...Bf7
- 2.Qh8#
- 1...Sb4
- 2.bxc3#
- 1...d5
- 2.Rxd5#
- 1...Qh5!
- threat
- 1.Sdf6?
- threat
- 2.Rd5#
- 1...Qh5
- 2.Be5#
- 1...Sb4
- 2.bxc3#
- 1...d5
- 2.Rxd5#
- 1...Bf7!
- threat
- 1.Sc7?
- threat
- 2.Rd5#
- 1...Bf7
- 2.Qh8#
- 1...Sb4
- 2.bxc3#
- 1...d5
- 2.Rxd5#
- 1...Qh5!
- threat
- 1.Be5+?
- 1...Kxe4
- 2.Sf6#
- 1...Kxd5
- 2.Ka6#
- 2.Kxa7#
- 2.Kc7#
- 2.Kb8#
- 2.Kc8#
- 2.Sf6#
- 1...Qxe5!
- 1...Kxe4
- 1.Qc8?
- threat
- 2.Qxc5#
- 1...c4
- 2.Qc5#
- 1...d6!
- threat
- 1.Sd2?
- Keys
- 1.Sexc3!
- threat
- 2.Re4#
- 1...Qxg2
- 2.Be5#
- 1...Sxc3
- 2.bxc3#
- 1...c4
- 2.Qxa7#
- 1...Bg6
- 2.Qh8#
- threat
- 1.Sexc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- B(k);OGATE::QAB(K)
- S(a);N_GUARD::P(A),XP(d)
- P(g);OGATEB::QAB(K),XP(h)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(b);P_PINS(G),XP(C)::S(E)
- P(e);OGATEB,XS(E)::B(D)
- P(g);OGATEB::QAB(K),XP(h)
- Refutation
- P(d);XS(E)
- Try
- S(E);
- Threat
- R1(J)
- Vars
- P(e);OGATE,XS(E)::B(D),XP(e)
- P(g);OGATEB::QAB(K),XP(h)
- B(k);OGATE::QAB(K)
- Refutation
- Q(b);P_PINS(G),XP(C)
- Try
- S(E);XP(g)
- Threat
- S(E)
- Vars
- K(f);OGATEB,S_FLIGHT,XS(E)::QAB(K),XP(h)
- Refutation
- S(a);
- Try
- S(E);
- Threat
- R1(J)
- Vars
- P(g);OGATEB::QAB(K),XP(h)
- B(k);OGATE::QAB(K)
- Refutation
- Q(b);P_PINS(G),XP(C)
- Try
- S(E);
- Threat
- R1(J)
- Vars
- Q(b);N_GUARD,P_PINS(G),XP(C)::B(D)
- P(g);OGATEB::QAB(K),XP(h)
- Refutation
- B(k);
- Try
- S(G);XP(d)
- Threat
- R1(H)
- Vars
- S(a);OGATE,XS(G)::P(A),XS(a)
- Q(b);N_GUARD::B(D)
- B(k);OGATE::QAB(K)
- P(i);::R1(H),XP(i)
- Refutation
- S(a);
- Try
- S(G);
- Threat
- R1(H)
- Vars
- S(a);N_GUARD,XS(G)::P(A),XP(d)
- P(g);OGATEB,XS(G)::QAB(K),XP(h)
- B(k);OGATE::QAB(K)
- P(i);::R1(H),XP(i)
- Refutation
- Q(b);
- Try
- S(G);
- Threat
- R1(H)
- Vars
- B(k);OGATE::QAB(K)
- S(a);N_GUARD::P(A),XP(d)
- P(i);::R1(H),XP(i)
- Refutation
- Q(b);
- Try
- S(G);
- Threat
- R1(H)
- Vars
- Q(b);N_GUARD::B(D)
- S(a);N_GUARD::P(A),XP(d)
- P(i);::R1(H),XP(i)
- Refutation
- B(k);
- Try
- S(G);
- Threat
- R1(H)
- Vars
- B(k);OGATE::QAB(K)
- S(a);N_GUARD::P(A),XP(d)
- P(i);::R1(H),XP(i)
- Refutation
- Q(b);
- Try
- B(D);CHECK
- Vars
- K(f);P-FLIGHT,XS(E)::S(G)
- Refutation
- Q(b);XB(D)
- Try
- Q(K);
- Threat
- QAB1(K),XP(g)
- Vars
- P(g);::QAB1(K)
- Refutation
- P(i);
- Try
- Actual
- S(E);XP(d)
- Threat
- R1(J)
- Vars
- Q(b);N_GUARD,P_PINS(G),XP(C)::B(D)
- S(a);OGATE,XS(E)::P(A),XS(a)
- P(g);OGATEB::QAB(K),XP(h)
- B(k);OGATE::QAB(K)
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).