MESON Chess Problem Database
Problem Display
PID: 211181 (4r2q/N7/7R/nNb1kB2/4p1PQ/B2R2P1/2P2P2/7K w - - 0 1)
Ettl, Gerald
Schach-Echo, 1991
#2
12 + 6
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qf6
- 2.Qxf6#
- 1...Qh7
- 2.Qf6#
- 1...Qg8
- 2.Qf6#
- 1...Re6
- 2.Rxe6#
- 1...Ra8
- 2.Re6#
- 1...Rb8
- 2.Re6#
- 1...Rc8
- 2.Re6#
- 1...Rd8
- 2.Re6#
- 1...Rf8
- 2.Re6#
- 1...Rg8
- 2.Re6#
- 1...Bxf2
- 2.Bd6#
- 1...Be3
- 2.Bd6#
- 1...Bb6
- 2.Bd6#
- 1...Bd6
- 2.Bb2#
- 2.Bxd6#
- 1...Bxa7
- 2.Bd6#
- 1...Be7
- 2.Bb2#
- 2.Re6#
- 1...Bf8
- 2.Bb2#
- 1...Sb3
- 2.Sc6#
- 1...Sc4
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sb7
- 2.Sc6#
- 1...e3
- 2.f4#
- 1...Qf6
- Tries
- 1.Sc3?
- threat
- 2.Rd5#
- 1...Qg8
- 2.Qf6#
- 1...Rd8
- 2.Re6#
- 1...Bd4
- 2.Bd6#
- 1...exd3!
- threat
- 1.Sc7?
- threat
- 2.Rd5#
- 1...Qg8
- 2.Qf6#
- 1...Rd8
- 2.Re6#
- 1...Bd4
- 2.Bd6#
- 1...exd3!
- threat
- 1.Qg5?
- threat
- 2.Be6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 2.Qf4#
- 1...exd3
- 2.Bxd3#
- 2.Bh7#
- 1...Bd4
- 2.Be6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qf6
- 2.Qf4#
- 2.Qxf6#
- 1...Qg7
- 2.Qf4#
- 2.Qxg7#
- 1...Qh7
- 2.Bxh7#
- 2.Qf4#
- 2.Qf6#
- 1...Qf8
- 2.Qf4#
- 1...Qg8
- 2.Qf4#
- 2.Qf6#
- 1...Re6
- 2.Bxe6#
- 2.Bg6#
- 2.Bh7#
- 2.Qf4#
- 1...Rc8
- 2.Be6#
- 2.Bd7#
- 2.Bh7#
- 2.Bxc8#
- 2.Qf4#
- 1...Rf8
- 2.Qf4#
- 1...Rg8
- 2.Qf4#
- 1...Be3
- 2.Bd6#
- 1...Be7
- 2.Bb2#
- 2.Qf4#
- 1...e3
- 2.Bh7#
- 2.Qf4#
- 2.f4#
- 1...Qxh6+!
- threat
- 1.Qe7+?
- 1...Bxe7
- 2.Bb2#
- 1...Rxe7!
- 1...Bxe7
- 1.g5?
- threat
- 2.Qxe4#
- 2.Qf4#
- 1...Kxf5
- 2.Qf4#
- 1...exd3
- 2.Qe4#
- 1...Bd4
- 2.Qxe4#
- 1...Be3
- 2.Qxe4#
- 1...e3
- 2.Qe4#
- 2.Qf4#
- 1...Qxh6!
- threat
- 1.Sc3?
- Keys
- 1.c4!
- threat
- 2.Rd5#
- 1...Sxc4
- 2.Sc6#
- 1...exd3
- 2.f4#
- 1...Bd4
- 2.Bd6#
- 1...Qg8
- 2.Qf6#
- 1...Rd8
- 2.Re6#
- threat
- 1.c4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 17
- Sets
- Q(f);N_GUARD::QAB1(H),XQ(f)
- Q(f);N_GUARD::QAB1(H)
- R(e);N_GUARD::R1(K),XR(e)
- R(e);N_GUARD::R1(K)
- B(c);OGATE,XP(C)::B(D)
- B(c);OGATE::B(D)
- B(c);OGATE,XS(L)::B(D)
- B(c);N_GUARD::B(D)
- S(b);N_GUARD::S(L)
- S(b);N_GUARD::S(L),XS(b)
- P(a);N_GUARD::P(C)
- Tries
- Try
- S(I);
- Threat
- R1(E)
- Vars
- Q(f);N_GUARD::QAB1(H)
- R(e);N_GUARD::R1(K)
- B(c);OGATE::B(D)
- Refutation
- P(a);XR(E)
- Try
- S(I);
- Threat
- R1(E)
- Vars
- Q(f);N_GUARD::QAB1(H)
- R(e);N_GUARD::R1(K)
- B(c);OGATE::B(D)
- Refutation
- P(a);XR(E)
- Try
- Q(H);P_SPINR(K)
- Threat
- DUALS(5)
- Vars
- Q(f);N_PINR(K)::QAB1(H)
- R(e);::QAB1(H)
- B(c);OGATE::B(D)
- Refutation
- Q(f);CHECK,XR(K)
- Try
- Q(H);CHECK,P_SPINR(K)
- Vars
- B(c);XQ(H)::B(D)
- Refutation
- R(e);XQ(H)
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT,XB(J)::QAR1(H)
- P(a);XR(E)::QAR1(H)
- B(c);::QAR1(H),XP(a)
- Refutation
- Q(f);P_PINQ(H),XR(K)
- Try
- Actual
- P(B);
- Threat
- R1(E)
- Vars
- S(b);N_GUARD,XP(B)::S(L)
- P(a);N_GUARD,XR(E)::P(C)
- B(c);OGATE::B(D)
- Q(f);N_GUARD::QAB1(H)
- R(e);N_GUARD::R1(K)
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).