MESON Chess Problem Database
Problem Display
PID: 163071 (8/1KB1p1r1/B4n2/8/pQ1NkN1R/2P1q3/2b5/4R3 w - - 0 1)
Ahues, Herbert Siegfried Oskar
stern, 1992
(First published on Thu Nov 5 1992)
#2
9 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Rxe2#
- 1...Rg1
- 2.Qxe7#
- 1...Rg2
- 2.Qxe7#
- 1...Rg3
- 2.Qxe7#
- 1...Rg4
- 2.Qxe7#
- 1...Rg6
- 2.Qxe7#
- 1...Rg8
- 2.Qxe7#
- 1...Bb1
- 2.Qxb1#
- 1...Bd1
- 2.Bd3#
- 1...Bb3
- 2.Bd3#
- 1...Bd3
- 2.Bxd3#
- 1...Qe2
- Tries
- 1.Sg6+?
- 1...Kd5
- 2.Bc4#
- 2.Qa5#
- 2.Qc4#
- 2.Qb5#
- 2.c4#
- 1...Sg4!
- 1...Kd5
- 1.Qa5?
- threat
- 2.Qe5#
- 2.Qf5#
- 1...Qxe1
- 2.Qe5#
- 1...Qe2
- 2.Rxe2#
- 2.Qe5#
- 1...Sg4
- 2.Qd5#
- 2.Qf5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Sg6#
- 2.Qd5#
- 2.Qf5#
- 1...e5
- 2.Qxe5#
- 1...e6
- 2.Qe5#
- 1...Rg5!
- threat
- 1.Qc5?
- threat
- 2.Qe5#
- 2.Qf5#
- 1...Qxe1
- 2.Qe5#
- 1...Qe2
- 2.Rxe2#
- 2.Qe5#
- 1...Sg4
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Sg6#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 1...e5
- 2.Qxe5#
- 1...e6
- 2.Qe5#
- 1...Rg5!
- threat
- 1.Qb3?
- threat
- 2.Qxc2#
- 2.Qe6#
- 1...Qxe1
- 2.Qe6#
- 1...Bxb3
- 2.Bd3#
- 1...Qe2
- 2.Rxe2#
- 2.Qe6#
- 1...Sg4
- 2.Qxc2#
- 2.Qd5#
- 1...Rg2
- 2.Qe6#
- 1...Rg5
- 2.Qxc2#
- 1...Bb1
- 2.Qe6#
- 2.Qxb1#
- 1...Bd1
- 2.Bd3#
- 2.Qe6#
- 1...Bd3
- 2.Bxd3#
- 2.Qe6#
- 1...Sd5
- 2.Qxc2#
- 2.Qxd5#
- 1...Sd7
- 2.Sg6#
- 2.Qxc2#
- 2.Qd5#
- 1...e5
- 2.Qxc2#
- 1...e6
- 2.Qxc2#
- 2.Qxe6#
- 1...axb3!
- threat
- 1.Qb5?
- threat
- 2.Qe5#
- 2.Qf5#
- 1...Qxe1
- 2.Qe5#
- 1...Qe2
- 2.Rxe2#
- 2.Qxe2#
- 2.Qe5#
- 1...Sg4
- 2.Qc6#
- 2.Qd5#
- 2.Qf5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Sg6#
- 2.Qc6#
- 2.Qd5#
- 2.Qf5#
- 1...e5
- 2.Qxe5#
- 1...e6
- 2.Qe5#
- 1...Rg5!
- threat
- 1.Sg6+?
- Keys
- 1.Be2!
- threat
- 2.Bf3#
- 1...Qxd4
- 2.Bg4#
- 1...Qxf4
- 2.Bc4#
- 1...Qxe2
- 2.Rxe2#
- 1...Qf3
- 2.Bd3#
- 2.Bxf3#
- 1...Rg3
- 2.Qxe7#
- 1...Bd1
- 2.Bd3#
- threat
- 1.Be2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(b);OGATEB::R(A),XQ(b)
- R(g);N_GUARD::QAR(C),XP(f)
- B(a);OGATEB::QAB(C),XB(a)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- Tries
- Try
- S(E);CHECK
- Refutation
- S(e);P_SPINS(e)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR1(C)
- S(e);N_GUARD::QAB1(C),XS(e)
- P(f);P_PINB(I)::QAR1(C),XP(f)
- P(f);P_PINB(I)::QAR1(C)
- Refutation
- R(g);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR1(C)
- S(e);N_GUARD::QAB1(C),XS(e)
- P(f);P_PINB(I)::QAR1(C),XP(f)
- P(f);P_PINB(I)::QAR1(C)
- Refutation
- R(g);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR2(C)
- B(a);N_GUARD,XQ(C)::B(G)
- R(g);::QAR2(C)
- R(g);::QAB(C),XB(a)
- P(f);P_PINB(I)::QAB(C),XB(a)
- Refutation
- P(c);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINQ(b),XR(A)::QAR1(C)
- S(e);N_GUARD::QAB1(C),XS(e)
- P(f);P_PINB(I)::QAR1(C),XP(f)
- P(f);P_PINB(I)::QAR1(C)
- Refutation
- R(g);
- Try
- Actual
- B(G);N_PINQ(b)
- Threat
- B(G)
- Vars
- Q(b);OGATEB,P_SPINQ(b),XS(D)::R(A)+B(G)
- Q(b);OGATEB,P_SPINQ(b),XS(E)::R(A)+B(G)
- Q(b);OGATE,P_SPINQ(b),XB(G)::R(A),XQ(b)
- R(g);N_GUARD::QAR(C),XP(f)
- B(a);N_GUARD::B(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).