MESON Chess Problem Database
Problem Display
PID: 161667 (1B4R1/1K1kp2r/N2Pp3/b1pR2N1/4Qn2/1n6/q2pB3/5b2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 1980
#2
9 + 11
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Qa4#
- 1...Qb2
- 2.Qa4#
- 1...Qc2
- 2.Qa4#
- 1...Qa4
- 2.Qxa4#
- 1...Bg2
- 2.Bb5#
- 1...Bh3
- 2.Bb5#
- 1...Sa1
- 2.Sxc5#
- 1...Sc1
- 2.Sxc5#
- 1...Sd4
- 2.Sxc5#
- 1...Sxe2
- 2.Qxe6#
- 1...Sg2
- 2.Qxe6#
- 1...Sd3
- 2.Qxe6#
- 1...Sh3
- 2.Qxe6#
- 1...Sxd5
- 2.Qxe6#
- 1...Sh5
- 2.Qxe6#
- 1...Sg6
- 2.Qxe6#
- 1...exd6
- 2.Qxh7#
- 1...Qb1
- Tries
- 1.Bxf1?
- threat
- 2.Bb5#
- 1...exd6
- 2.Qxh7#
- 1...Qa4
- 2.Qxa4#
- 1...Sd4
- 2.Sxc5#
- 1...Se2
- 2.Qxe6#
- 1...Sd3
- 2.Qxe6#
- 1...c4!
- threat
- 1.Bc7?
- threat
- 2.Sb8#
- 2.Rd8#
- 1...exd6
- 2.Qxh7#
- 1...Rh8
- 2.Sb8#
- 1...Bxc7!
- threat
- 1.Rd3?
- threat
- 2.Qc6#
- 1...exd6
- 2.Qxh7#
- 1...Qa4
- 2.Qxa4#
- 1...Sd4
- 2.Sxc5#
- 1...Sd5
- 2.Qxe6#
- 1...Bg2!
- threat
- 1.Rd4?
- threat
- 2.Qc6#
- 1...Sxd4
- 2.Sxc5#
- 1...exd6
- 2.Qxh7#
- 1...Bg2
- 2.Bb5#
- 1...Sd5
- 2.Qxe6#
- 1...Qa4!
- threat
- 1.Rxc5?
- threat
- 2.Qc6#
- 1...Sxc5+
- 2.Sxc5#
- 1...exd6
- 2.Qxh7#
- 1...Qa4
- 2.Qxa4#
- 1...Bg2
- 2.Bb5#
- 1...Sd5
- 2.Qxe6#
- 1...Sd4!
- threat
- 1.Re5?
- threat
- 2.Qc6#
- 1...exd6
- 2.Qxh7#
- 1...Qa4
- 2.Qxa4#
- 1...Bg2
- 2.Bb5#
- 1...Sd4
- 2.Sxc5#
- 1...Sd5!
- threat
- 1.Rf5?
- threat
- 2.Qc6#
- 1...Qa4
- 2.Qxa4#
- 1...Bg2
- 2.Bb5#
- 1...Sd4
- 2.Sxc5#
- 1...Sd5
- 2.Qxe6#
- 1...exd6!
- threat
- 1.dxe7+?
- 1...Sxd5
- 2.Qxe6#
- 2.e8Q#
- 1...exd5
- 2.e8Q#
- 1...Kxe7!
- 1...Sxd5
- 1.Bxf1?
- Keys
- 1.Rxd2!
- threat
- 2.Qc6#
- 1...exd6
- 2.Qxh7#
- 1...Qa4
- 2.Qxa4#
- 1...Bg2
- 2.Bb5#
- 1...Sd4
- 2.Sxc5#
- 1...Sd5
- 2.Qxe6#
- threat
- 1.Rxd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 12
- Sets
- Q(b);N_GUARD::QAB(B)
- Q(b);N_GUARD::QAB(B),XQ(b)
- B(a);N_GUARD::B(A)
- S(d);N_GUARD::S(E),XP(g)
- S(e);N_GUARD,XB(A)::QAB1(B),XP(h)
- S(e);N_GUARD::QAB1(B),XP(h)
- S(e);N_GUARD,XR(C)::QAB1(B),XP(h)
- P(j);OGATEB,P_SPINP(j),XP(F)::QAR(B),XR(k)
- Tries
- Try
- B(A);XB(a)
- Threat
- B(A)
- Vars
- P(j);OGATEB,P_SPINP(j),XP(F)::QAR(B),XR(k)
- Q(b);N_GUARD::QAB(B),XQ(b)
- S(d);N_GUARD::S(E),XP(g)
- S(e);N_GUARD::QAB1(B),XP(h)
- Refutation
- P(g);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- P(j);OGATEB,P_SPINP(j),XP(F)::QAR(B),XR(k)
- R(k);::S(E)
- Refutation
- B(f);XB(H)
- Try
- R(C);
- Threat
- QAB1(B)
- Vars
- P(j);OGATEB,P_SPINP(j),XP(F)::QAR(B),XR(k)
- Q(b);N_GUARD::QAB(B),XQ(b)
- S(d);N_GUARD::S(E),XP(g)
- S(e);N_GUARD::QAB1(B),XP(h)
- Refutation
- B(a);P_PINQ(B)
- Try
- R(C);
- Threat
- QAB1(B)
- Vars
- S(d);N_GUARD,XR(C)::S(E),XP(g)
- P(j);OGATEB,P_SPINP(j),XP(F)::QAR(B),XR(k)
- B(a);N_GUARD,P_PINQ(B)::B(A)
- S(e);N_GUARD::QAB1(B),XP(h)
- Refutation
- Q(b);
- Try
- R(C);XP(g)
- Threat
- QAB1(B)
- Vars
- S(d);CHECK,XR(C)::S(E),XS(d)
- P(j);OGATEB,XP(F)::QAR(B),XR(k)
- Q(b);N_GUARD::QAB(B),XQ(b)
- B(a);N_GUARD,P_PINQ(B)::B(A)
- S(e);N_GUARD::QAB1(B),XP(h)
- Refutation
- S(d);
- Try
- R(C);
- Threat
- QAB1(B)
- Vars
- P(j);OGATEB,XP(F)::QAR(B),XR(k)
- Q(b);N_GUARD::QAB(B),XQ(b)
- B(a);N_GUARD,P_PINQ(B)::B(A)
- S(d);N_GUARD::S(E),XP(g)
- Refutation
- S(e);
- Try
- R(C);
- Threat
- QAB1(B)
- Vars
- Q(b);N_GUARD::QAB(B),XQ(b)
- B(a);N_GUARD,P_PINQ(B)::B(A)
- S(d);N_GUARD::S(E),XP(g)
- S(e);N_GUARD::QAB1(B),XP(h)
- Refutation
- P(j);XP(F)
- Try
- P(F);CHECK,XP(j)
- Vars
- P(h);XR(C)::P=Q
- Refutation
- K(i);P-FLIGHT,P_SPINP(h),XP(F)
- Try
- Actual
- R(C);XP(c)
- Threat
- QAB1(B)
- Vars
- P(j);OGATEB,P_SPINP(j),XP(F)::QAR(B),XR(k)
- Q(b);N_GUARD::QAB(B),XQ(b)
- B(a);N_GUARD,P_PINQ(B)::B(A)
- S(d);N_GUARD::S(E),XP(g)
- S(e);N_GUARD::QAB1(B),XP(h)
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).