MESON Chess Problem Database
Problem Display
PID: 158359 (5qnN/3B1pp1/5kNp/2p2pb1/7Q/4R3/3R4/2K5 w - - 0 1)
Ahues, Herbert Siegfried Oskar
El Ajedrez Espanol, 1961
#2
7 + 9
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Rxd6#
- 1...Qa8
- 2.Rd6#
- 1...Qc8
- 2.Rd6#
- 1...Qd8
- 2.Rd6#
- 1...Se7
- 2.Rd6#
- 1...c4
- 2.Qd4#
- 1...fxg6
- 2.Re6#
- 1...Qd6
- Tries
- 1.Sxf8?
- threat
- 2.Sh7#
- 2.Rd6#
- 1...Bxh4
- 2.Sh7#
- 1...g6!
- threat
- 1.Rd5?
- threat
- 2.Rxf5#
- 1...Se7
- 2.Rd6#
- 1...f4
- 2.Rf5#
- 1...fxg6!
- threat
- 1.Re5?
- threat
- 2.Rxf5#
- 1...fxg6
- 2.Re6#
- 1...f4
- 2.Rf5#
- 1...Se7!
- threat
- 1.Qe4?
- threat
- 2.Qxf5#
- 2.Qe5#
- 1...Bxe3
- 2.Qxf5#
- 1...fxg6
- 2.Qe5#
- 2.Qe6#
- 1...Bf4
- 2.Qxf5#
- 1...Bh4
- 2.Qxf5#
- 2.Qxh4#
- 1...Qe7
- 2.Qxf5#
- 1...Qd6
- 2.Rxd6#
- 2.Qxf5#
- 1...Qb8
- 2.Qxf5#
- 1...Qe8
- 2.Qxf5#
- 1...Se7
- 2.Rd6#
- 2.Qe5#
- 1...f4
- 2.Qf5#
- 2.Qe5#
- 1...fxe4!
- threat
- 1.Qf4?
- threat
- 2.Qe5#
- 2.Qxf5#
- 1...fxg6
- 2.Re6#
- 2.Qe5#
- 1...Qe7
- 2.Qxf5#
- 1...Qd6
- 2.Rxd6#
- 2.Qxd6#
- 2.Qxf5#
- 1...Qb8
- 2.Qxf5#
- 1...Qe8
- 2.Qxf5#
- 1...Bh4
- 2.Qxh4#
- 2.Qxf5#
- 1...Se7
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Bxf4!
- threat
- 1.Qg4?
- threat
- 2.Qxf5#
- 1...fxg6
- 2.Re6#
- 1...Se7
- 2.Rd6#
- 1...f4
- 2.Qf5#
- 1...fxg4!
- threat
- 1.Sxf8?
- Keys
- 1.Qh3!
- threat
- 2.Qxf5#
- 1...fxg6
- 2.Re6#
- 1...Se7
- 2.Rd6#
- 1...f4
- 2.Qf5#
- threat
- 1.Qh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(h);N_GUARD::R(B),XQ(h)
- Q(h);N_GUARD::R(B)
- S(i);S_CUTQ(h)::R(B)
- P(a);N_GUARD::QAB(D)
- P(f);N_GUARD,XS(E)::R1(C)
- Tries
- Try
- S(E);XQ(h)
- Threat
- DUALS(2)
- Vars
- B(c);N_SPINB(c),XQ(D)::S(E)
- Refutation
- P(g);
- Try
- R(B);P_SPINR(C)
- Threat
- R1(B),XP(b)
- Vars
- S(i);S_CUTQ(h)::R(B)
- P(b);N_PINR(C)::R1(B)
- Refutation
- P(f);XS(E)
- Try
- R(C);P_SPINR(B)
- Threat
- R1(C),XP(b)
- Vars
- P(f);N_GUARD,XS(E)::R1(C)
- P(b);N_PINR(B)::R1(C)
- Refutation
- S(i);
- Try
- Q(D);N_PINB(c)
- Threat
- DUALS(2)
- Vars
- B(c);P_PINR(B),XR(C)::QAR1(D),XP(b)
- B(c);::QAR1(D),XP(b)
- Q(h);::QAR1(D),XP(b)
- Refutation
- P(b);XQ(D)
- Try
- Q(D);N_PINB(c),P_PINP(b)
- Threat
- DUALS(2)
- Vars
- Q(h);::QAR1(D),XP(b)
- Refutation
- B(c);N_SPINP(b),XQ(D)
- Try
- Q(D);N_PINB(c)
- Threat
- QAR1(D),XP(b)
- Vars
- P(f);N_GUARD,XS(E)::R1(C)
- S(i);S_CUTQ(h)::R(B)
- P(b);::QAR1(D)
- Refutation
- P(b);XQ(D)
- Try
- Actual
- Q(D);N_PINB(c)
- Threat
- QAR1(D),XP(b)
- Vars
- P(f);N_GUARD,XS(E)::R1(C)
- S(i);S_CUTQ(h)::R(B)
- P(b);::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).