MESON Chess Problem Database
Problem Display
PID: 160710 (8/2Np4/pp4Kn/q3p2B/2Qp1k2/1n3Pp1/7r/2Nrb1B1 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Problem (Zagreb), 1972
#2
7 + 13
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Sd5#
- 1...Qc3
- 2.Sd5#
- 1...Qb4
- 2.Sd5#
- 1...Qa1
- 2.Sd5#
- 1...Qa2
- 2.Sd5#
- 1...Qa3
- 2.Sd5#
- 1...Qa4
- 2.Sd5#
- 1...Qd5
- 2.Sxd5#
- 1...Rd3
- 2.Sxd3#
- 1...Rh1
- 2.Se2#
- 1...Re2
- 2.Sxe2#
- 1...Rh3
- 2.Se2#
- 1...Rh4
- 2.Se2#
- 1...Bd2
- 2.Sd3#
- 1...Sd2
- 2.Sd3#
- 1...Sc5
- 2.Sd5#
- 1...Sf7
- 2.Qxf7#
- 1...g2
- 2.Se2#
- 1...b5
- 2.Sd5#
- 1...d5
- 2.Se6#
- 1...d6
- 2.Se6#
- 1...Qd2
- Tries
- 1.Qe2?
- threat
- 2.Qe4#
- 1...Rxe2
- 2.Sxe2#
- 1...e4
- 2.Qxe4#
- 1...Qd5
- 2.Sxd5#
- 1...Sd2
- 2.Sd3#
- 1...Sc5
- 2.Sd5#
- 1...d5
- 2.Se6#
- 1...g2!
- threat
- 1.Qd3?
- threat
- 2.Qe4#
- 1...Rxd3
- 2.Sxd3#
- 1...g2
- 2.Se2#
- 1...e4
- 2.Qxe4#
- 1...Qd5
- 2.Sxd5#
- 1...Re2
- 2.Sxe2#
- 1...Sc5
- 2.Sd5#
- 1...d5
- 2.Se6#
- 1...Sd2!
- threat
- 1.Qd5?
- threat
- 2.Qe4#
- 1...Qxd5
- 2.Sxd5#
- 1...g2
- 2.Se2#
- 1...Re2
- 2.Sxe2#
- 1...Sd2
- 2.Sd3#
- 1...e4
- 2.Qxe4#
- 1...Sc5!
- threat
- 1.Qf7+?
- 1...Sf5
- 2.Qxf5#
- 1...Sxf7!
- 1...Sf5
- 1.Qe2?
- Keys
- 1.Qc6!
- threat
- 2.Qe4#
- 1...dxc6
- 2.Se6#
- 1...g2
- 2.Se2#
- 1...e4
- 2.Qxe4#
- 1...Qd5
- 2.Sxd5#
- 1...Re2
- 2.Sxe2#
- 1...Sd2
- 2.Sd3#
- 1...Sc5
- 2.Sd5#
- 1...d5
- 2.Se6#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- Q(h);N_GUARD::S(G)
- Q(h);N_GUARD::S(G),XQ(h)
- R(a);N_GUARD::S(A),XR(a)
- R(c);N_GUARD::S(A)
- R(c);N_GUARD::S(A),XR(c)
- B(b);S_CUTR(a)::S(A)
- S(d);S_CUTR(a)::S(A)
- S(d);S_CUTQ(h)::S(G)
- S(l);N_GUARD::QAR(D),XS(l)
- P(e);S_CUTR(c)::S(A)
- P(k);S_CUTQ(h)::S(G)
- P(m);N_GUARD::S(G)
- Tries
- Try
- Q(D);N_PINP(f)
- Threat
- QAR1(D)
- Vars
- R(c);XQ(D)::S(A),XR(c)
- P(i);::QAR1(D),XP(i)
- Q(h);N_GUARD::S(G),XQ(h)
- S(d);S_CUTR(a)::S(A)
- S(d);S_CUTQ(h)::S(G)
- P(m);N_GUARD::S(G)
- Refutation
- P(e);
- Try
- Q(D);N_PINP(f)
- Threat
- QAR1(D)
- Vars
- R(a);XQ(D)::S(A),XR(a)
- P(e);S_CUTR(c)::S(A)
- P(i);::QAR1(D),XP(i)
- Q(h);N_GUARD::S(G),XQ(h)
- R(c);N_GUARD::S(A),XR(c)
- S(d);S_CUTQ(h)::S(G)
- P(m);N_GUARD::S(G)
- Refutation
- S(d);
- Try
- Q(D);N_PINP(f)
- Threat
- QAR1(D)
- Vars
- Q(h);XQ(D)::S(G),XQ(h)
- P(e);S_CUTR(c)::S(A)
- R(c);N_GUARD::S(A),XR(c)
- S(d);S_CUTR(a)::S(A)
- P(i);::QAR1(D),XP(i)
- Refutation
- S(d);
- Try
- Q(D);CHECK,N_PINP(f)
- Vars
- S(l);N_GUARD,P_SPINS(l)::QAR1(D),XS(l)
- Refutation
- S(l);XQ(D)
- Try
- Actual
- Q(D);N_PINP(f)
- Threat
- QAR1(D)
- Vars
- P(m);N_GUARD,XQ(D)::S(G)
- P(e);S_CUTR(c)::S(A)
- P(i);::QAR1(D),XP(i)
- Q(h);N_GUARD::S(G),XQ(h)
- R(c);N_GUARD::S(A),XR(c)
- S(d);S_CUTR(a)::S(A)
- S(d);S_CUTQ(h)::S(G)
- P(m);N_GUARD::S(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).