MESON Chess Problem Database
Problem Display
PID: 233264 (2r5/4NN1q/2b4b/nR4n1/1K1kP1QB/6p1/2PP4/8 w - - 0 1)
Muller, Dieter
Freie Presse, 1977
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.Sf5#
- 1...Qf5
- 2.Sxf5#
- 1...Qg8
- 2.Sf5#
- 1...Qg7
- 2.Sf5#
- 1...Qh8
- 2.Sf5#
- 1...Bxe4
- 2.Rd5#
- 1...Bd5
- 2.Rxd5#
- 1...Bd7
- 2.Rd5#
- 1...Be8
- 2.Rd5#
- 1...Sh3
- 2.Bf6#
- 1...Sxe4
- 2.Bf6#
- 1...Se6
- 2.Bf6#
- 1...g2
- 2.Bf2#
- 1...Qxe4
- Tries
- 1.Sxc6+?
- 1...Rxc6
- 2.Rd5#
- 1...Sxc6+!
- 1...Rxc6
- 1.Qf3?
- threat
- 2.Qd3#
- 2.Qe3#
- 2.c3#
- 1...Qxe4
- 2.Qc3#
- 2.c3#
- 1...Bxe4
- 2.Qe3#
- 2.Qf6#
- 1...Bxb5
- 2.Qe3#
- 1...Sxe4
- 2.Qd3#
- 1...Sxf7
- 2.Qd3#
- 2.c3#
- 1...Bd5
- 2.Rxd5#
- 2.Qd3#
- 2.Qe3#
- 1...Bb7
- 2.Qd3#
- 2.Qe3#
- 1...Bd7
- 2.Rd5#
- 2.Qd3#
- 2.Qe3#
- 1...Ba8
- 2.Qd3#
- 2.Qe3#
- 1...Be8
- 2.Rd5#
- 2.Qd3#
- 2.Qe3#
- 1...Sc4
- 2.Qd3#
- 2.c3#
- 1...Sh3
- 2.Bf6#
- 2.Qd3#
- 2.c3#
- 1...Se6
- 2.Bf6#
- 2.Qd3#
- 2.c3#
- 1...Sxf3!
- threat
- 1.Qd7+?
- 1...Kxe4
- 2.Qg4#
- 1...Bd5
- 2.Qxd5#
- 1...Bxd7!
- 1...Kxe4
- 1.Qxg3?
- threat
- 2.Qe5#
- 2.Qd3#
- 2.Qe3#
- 1...Kxe4
- 2.Qe3#
- 2.Qg4#
- 1...Qxe4
- 2.Qc3#
- 2.c3#
- 1...Bxe4
- 2.Qf2#
- 2.Qe5#
- 2.Qg1#
- 2.Qe3#
- 1...Bxb5
- 2.Qe5#
- 2.Qe3#
- 1...Sxe4
- 2.Qe5#
- 2.Qd3#
- 1...Sxf7
- 2.Qd3#
- 1...Qf5
- 2.Qd3#
- 2.Qe3#
- 1...Qg7
- 2.Qd3#
- 2.Qe3#
- 1...Qh8
- 2.Qd3#
- 2.Qe3#
- 1...Bg7
- 2.Qd3#
- 2.Qe3#
- 1...Sc4
- 2.Qd3#
- 1...Sh3
- 2.Qe5#
- 2.Qd3#
- 1...Se6
- 2.Qe5#
- 2.Qd3#
- 1...Sf3!
- threat
- 1.e5+?
- 1...Qe4
- 2.Sf5#
- 1...Be4
- 2.Rd5#
- 1...Se4!
- 1...Qe4
- 1.Sxc6+?
- Keys
- 1.Qe2!
- threat
- 2.Qd3#
- 2.Qe3#
- 2.c3#
- 1...Qxe4
- 2.c3#
- 1...Bxe4
- 2.Qe3#
- 1...Bxb5
- 2.Qe3#
- 1...Sxe4
- 2.Qd3#
- 1...Sxf7
- 2.Qd3#
- 2.c3#
- 1...Bd5
- 2.Rxd5#
- 2.Qd3#
- 2.Qe3#
- 1...Bb7
- 2.Qd3#
- 2.Qe3#
- 1...Bd7
- 2.Rd5#
- 2.Qd3#
- 2.Qe3#
- 1...Ba8
- 2.Qd3#
- 2.Qe3#
- 1...Be8
- 2.Rd5#
- 2.Qd3#
- 2.Qe3#
- 1...Sc4
- 2.Qd3#
- 2.Qxc4#
- 2.c3#
- 1...Sf3
- 2.Qd3#
- 2.c3#
- 1...Sh3
- 2.Bf6#
- 2.Qd3#
- 2.c3#
- 1...Se6
- 2.Bf6#
- 2.Qd3#
- 2.c3#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(g);N_GUARD,P_SPINQ(g),XP(D)::S(H)
- Q(g);N_GUARD::S(H),XQ(g)
- Q(g);N_GUARD::S(H)
- B(e);N_GUARD,P_SPINB(e),XP(D)::R1(G)
- B(e);N_GUARD::R1(G),XB(e)
- B(e);N_GUARD::R1(G)
- S(d);OGATE::B(F)
- S(d);OGATE,P_SPINS(d),XP(D)::B(F)
- P(a);OGATE::B(F)
- Tries
- Try
- S(H);CHECK,XB(e)
- Vars
- R(h);XS(H)::R1(G)
- Refutation
- S(c);CHECK,XS(H)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- B(e);XR(G)::QAB1(E)
- S(d);XP(D)::QAR1(E)
- Refutation
- S(d);XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(b);OGATEB,P-FLIGHT,XP(D)::QAR2(E)
- B(e);N_GUARD,P_SPINB(e)::QAR1(E),XB(e)
- Refutation
- B(e);XQ(E)
- Try
- Q(E);XP(a)
- Threat
- DUALS(3)
- Vars
- S(d);XS(I)::QAR1(E)
- S(c);::QAR1(E)
- Refutation
- S(d);
- Try
- P(D);CHECK
- Vars
- Q(g);P_SPINQ(g)::S(H)
- B(e);P_SPINB(e)::R1(G)
- Refutation
- S(d);P_SPINS(d)
- Try
- Actual
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(g);XP(D)::P(A)
- B(e);XP(D)::QAB1(E)
- B(e);XR(G)::QAB1(E)
- S(d);XP(D)::QAR1(E)
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).