MESON Chess Problem Database
Problem Display
PID: 237270 (2N1n2B/8/4pp1K/n2Pk1N1/1Q2P1Rp/1p4P1/8/2q5 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schweizerische Schachzeitung, 2015
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Sf3#
- 2.Sf7#
- 1...Qa3
- 2.Sf3#
- 2.Sf7#
- 2.Qc3#
- 1...Qf4
- 2.Qc3#
- 2.gxf4#
- 1...Qxg5+
- 2.Rxg5#
- 1...Qa1
- 2.Sf3#
- 2.Sf7#
- 1...Qb1
- 2.Sf3#
- 2.Sf7#
- 2.Qc3#
- 1...Qd1
- 2.Sf7#
- 1...Qe1
- 2.Sf3#
- 2.Sf7#
- 1...Qf1
- 2.Sf7#
- 2.Qc3#
- 1...Qg1
- 2.Sf3#
- 2.Sf7#
- 1...Qh1
- 2.Sf7#
- 2.Qc3#
- 1...Qc2
- 2.Sf3#
- 2.Sf7#
- 1...Qc3
- 2.Sf7#
- 2.Qxc3#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf3#
- 2.Sf7#
- 1...Qc6
- 2.Sf3#
- 2.Sf7#
- 1...Qc7
- 2.Sf3#
- 1...Qxc8
- 2.Sf3#
- 2.Sf7#
- 1...Qb2
- Tries
- 1.Kg6?
- threat
- 2.Sf3#
- 2.Sf7#
- 1...Qxg5+
- 2.Rxg5#
- 1...Qc4
- 2.Sf3#
- 1...Sc4
- 2.Sf3#
- 1...Qe3
- 2.Sf7#
- 1...Qf4
- 2.Sf7#
- 2.Qc3#
- 2.gxf4#
- 1...Qd1
- 2.Sf7#
- 1...Qf1
- 2.Sf7#
- 2.Qc3#
- 1...Qh1
- 2.Sf7#
- 2.Qc3#
- 1...Qc3
- 2.Sf7#
- 2.Qxc3#
- 1...Qc7
- 2.Sf3#
- 1...Sd6
- 2.Sf3#
- 2.Bxf6#
- 1...exd5!
- threat
- 1.Sb6?
- threat
- 2.Sd7#
- 1...Qxg5+
- 2.Rxg5#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf7#
- 1...Qc6
- 2.Sf3#
- 2.Sf7#
- 1...Qc7
- 2.Sf3#
- 1...Qc8
- 2.Sf3#
- 2.Sf7#
- 1...Sc4!
- threat
- 1.Rf4?
- threat
- 2.Sf3#
- 2.Sf7#
- 1...Qxf4
- 2.Qc3#
- 1...exd5
- 2.Rf5#
- 1...Qc4
- 2.Sf3#
- 1...Sc4
- 2.Sf3#
- 1...Qe3
- 2.Sf7#
- 1...Qd1
- 2.Sf7#
- 1...Qf1
- 2.Sf7#
- 2.Qc3#
- 1...Qh1
- 2.Sf7#
- 2.Qc3#
- 1...Qc3
- 2.Sf7#
- 2.Qxc3#
- 1...Qc7
- 2.Sf3#
- 1...Sd6
- 2.Sf3#
- 2.Bxf6#
- 1...hxg3!
- threat
- 1.Qd2?
- threat
- 2.Sf3#
- 2.Sf7#
- 1...Qxc8
- 2.Sf7#
- 1...exd5
- 2.Qxd5#
- 1...Qd1
- 2.Sf7#
- 1...Qf1
- 2.Sf7#
- 2.Qc3#
- 2.Qb2#
- 1...Qh1
- 2.Sf7#
- 2.Qc3#
- 2.Qb2#
- 1...Qc3
- 2.Sf7#
- 2.Qxc3#
- 1...Qc7
- 2.Sf3#
- 1...Sd6
- 2.Sf3#
- 1...Qxd2!
- threat
- 1.Kg6?
- Keys
- 1.Se7!
- threat
- 2.Sg6#
- 1...Qxg5+
- 2.Rxg5#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf7#
- 1...Sc4
- 2.Sc6#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(a);CHECK,OGATE,XS(F)::R(D),XQ(a)
- Q(a);N_PINS(F)::S(F)
- Tries
- Try
- K(G);N_SPINS(F),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE,XS(F)::R(D),XQ(a)
- Q(a);::S(F)
- S(d);::S(F)
- Refutation
- P(f);XP(E)
- Try
- S(H);
- Threat
- S(H)
- Vars
- Q(a);CHECK,OGATE,XS(F)::R(D),XQ(a)
- Q(a);N_PINS(F)::S(F)
- Refutation
- S(d);
- Try
- R(D);N_SPINS(F)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,P_PINS(F),XR(D)::QAB(B)
- P(f);N_GUARD,XP(E)::R1(D)
- Q(a);::S(F)
- S(d);::S(F)
- Refutation
- P(c);XP(A)
- Try
- Q(B);N_SPINS(F)
- Threat
- DUALS(2)
- Vars
- Q(a);XS(H)::S(F)
- P(f);OGATE,XP(E)::QAR1(B),XP(f)
- Q(a);::S(F)
- S(h);::S(F)
- Refutation
- Q(a);P_PINS(F),XQ(B)
- Try
- Actual
- S(H);
- Threat
- S(H)
- Vars
- Q(a);CHECK,OGATE,XS(F)::R(D),XQ(a)
- Q(a);N_PINS(F)::S(F)
- S(d);N_GUARD,S_CUTQ(a)::S(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).