MESON Chess Problem Database
Problem Display
PID: 64903 (1b1B1r2/4NpQ1/q6p/2PRN1P1/4pk2/p1n1p1pB/3P2Pr/K3Rn2 w - - 0 1)
Dittrich, Stefan
2nd Prize, Schweizerische Schachzeitung, 1984
#2
12 + 13
| 3748 | FIDE Album (1983-1985) | 1992 |
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Qf6#
- 1...Qd3
- 2.Qf6#
- 1...Qc4
- 2.Qf6#
- 1...Qb5
- 2.Qf6#
- 1...Qb7
- 2.Rxf1#
- 2.Qf6#
- 1...Qc8
- 2.Rxf1#
- 1...Qa4
- 2.Rxf1#
- 2.Qf6#
- 1...Qa5
- 2.Rxf1#
- 2.Qf6#
- 1...Qb6
- 2.Rxf1#
- 1...Qc6
- 2.Rxf1#
- 1...Qd6
- 2.Rxf1#
- 1...Qe6
- 2.Rxf1#
- 1...Qf6
- 2.Rxf1#
- 2.Qxf6#
- 1...Qa7
- 2.Rxf1#
- 2.Qf6#
- 1...Qa8
- 2.Rxf1#
- 2.Qf6#
- 1...Bxe5
- 2.Qxe5#
- 1...Bd6
- 2.Qf6#
- 1...Se2
- 2.Rxf1#
- 1...Sb5
- 2.Rxf1#
- 1...Sxd5
- 2.Sxd5#
- 1...f6
- 2.S5g6#
- 1...Qe2
- Tries
- 1.Sd3+?
- 1...Qxd3
- 2.Rf5#
- 2.Qf6#
- 1...exd3!
- 1...Qxd3
- 1.Sc4?
- threat
- 2.Rxf1#
- 2.Rf5#
- 1...Qxc4
- 2.Rf5#
- 2.Qf6#
- 1...Rxg2
- 2.Rf5#
- 1...Sxd2
- 2.Rf5#
- 1...Sxd5
- 2.Sxd5#
- 2.Rxf1#
- 1...Qc8
- 2.Rxf1#
- 1...Qe6
- 2.Rxf1#
- 1...Qf6
- 2.Rxf1#
- 2.Qxf6#
- 1...Qg6
- 2.Rxf1#
- 1...Rh1
- 2.Rf5#
- 1...Be5
- 2.Rxf1#
- 2.Qxe5#
- 1...Sd1
- 2.Rf5#
- 1...e2
- 2.Rf5#
- 1...f5
- 2.Rxf1#
- 1...Rxh3!
- threat
- 1.S5c6?
- threat
- 2.Rf5#
- 2.Qf6#
- 1...Qxc6
- 2.Rxf1#
- 2.Rf5#
- 1...Sxd5
- 2.Sxd5#
- 1...Qc8
- 2.Rxf1#
- 1...Be5
- 2.Qxe5#
- 1...f5
- 2.Sg6#
- 1...f6
- 2.Sg6#
- 2.Rf5#
- 1...Rxh3!
- threat
- 1.S5g6+?
- 1...Qxg6
- 2.Rxf1#
- 1...fxg6!
- 1...Qxg6
- 1.S7c6?
- threat
- 2.Qf6#
- 1...Qxc6
- 2.Rxf1#
- 1...Bxe5
- 2.Qxe5#
- 1...Qc8
- 2.Rxf1#
- 1...f5
- 2.Sg6#
- 1...f6
- 2.Sg6#
- 1...Sxd5!
- threat
- 1.S7g6+?
- 1...Qxg6
- 2.Rxf1#
- 1...fxg6!
- 1...Qxg6
- 1.Be6?
- threat
- 2.Qf6#
- 1...Qxe6
- 2.Rxf1#
- 1...Bxe5
- 2.Qxe5#
- 1...Sxd5
- 2.Sxd5#
- 1...f5
- 2.S7g6#
- 1...f6
- 2.S5g6#
- 1...fxe6!
- threat
- 1.Bb6?
- threat
- 2.Qf6#
- 1...Qxb6
- 2.Rxf1#
- 1...Bxe5
- 2.Qxe5#
- 1...Sxd5
- 2.Sxd5#
- 1...Qc8
- 2.Rxf1#
- 1...f6
- 2.S5g6#
- 1...f5!
- threat
- 1.Rd6?
- threat
- 2.Qf6#
- 1...Qxd6
- 2.Rxf1#
- 1...f5
- 2.S7g6#
- 1...Qc8
- 2.Rxf1#
- 1...Sd5
- 2.Sxd5#
- 1...f6!
- threat
- 1.Qxf7+?
- 1...Kxg5
- 2.Sf3#
- 1...Qf6
- 2.S5g6#
- 1...Rxf7!
- 1...Kxg5
- 1.Sd3+?
- Keys
- 1.c6!
- threat
- 2.Qf6#
- 1...Qxc6
- 2.Rxf1#
- 1...Bxe5
- 2.Qxe5#
- 1...Sxd5
- 2.Sxd5#
- 1...f5
- 2.S7g6#
- 1...Qc8
- 2.Rxf1#
- 1...f6
- 2.S5g6#
- threat
- 1.c6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(i);N_GUARD::QAR2(K)
- Q(i);N_GUARD::R(B),XS(a)
- B(l);OGATE,XS(H)::QAB1(K),XB(l)
- B(l);S_CUTQ(i)::QAR2(K)
- S(d);S_CUTQ(i)::R(B),XS(a)
- S(d);XR(G)::S(J),XS(d)
- P(k);N_GUARD,S_CUTQ(i)::S(H)
- Tries
- Try
- S(H);CHECK
- Refutation
- P(g);XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- R(b);XP(D)::R1(G)
- S(a);XP(C)::R1(G)
- Q(i);::R(B),XS(a)
- R(b);::R1(G)
- S(d);::R1(G)
- P(e);::R1(G)
- P(k);::R(B),XS(a)
- Refutation
- R(b);XB(E)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(d);XR(G)::S(J),XS(d)
- Q(i);N_GUARD::R(B),XS(a)
- B(l);N_GUARD::QAB1(K),XB(l)
- P(k);N_GUARD::S(J)
- Refutation
- R(b);XB(E)
- Try
- S(H);CHECK
- Vars
- Q(i);XS(H)::R(B),XS(a)
- Refutation
- P(k);XS(H)
- Try
- S(J);
- Threat
- QAR2(K)
- Vars
- Q(i);N_GUARD,XS(J)::R(B),XS(a)
- B(l);OGATE,XS(H)::QAB1(K),XB(l)
- Q(i);N_GUARD::R(B),XS(a)
- P(k);N_GUARD::S(H)
- Refutation
- S(d);XR(G)
- Try
- S(J);CHECK
- Vars
- Q(i);XS(J)::R(B),XS(a)
- Refutation
- P(k);XS(J)
- Try
- B(E);
- Threat
- QAR2(K)
- Vars
- Q(i);N_GUARD,XB(E)::R(B),XS(a)
- B(l);OGATE,XS(H)::QAB1(K),XB(l)
- S(d);XR(G)::S(J),XS(d)
- P(k);N_GUARD::S(J)
- P(k);N_GUARD::S(H)
- Refutation
- P(k);XB(E)
- Try
- B(L);
- Threat
- QAR2(K)
- Vars
- Q(i);N_GUARD,XB(L)::R(B),XS(a)
- B(l);OGATE,XS(H)::QAB1(K),XB(l)
- S(d);XR(G)::S(J),XS(d)
- Q(i);N_GUARD::R(B),XS(a)
- P(k);N_GUARD::S(H)
- Refutation
- P(k);
- Try
- R(G);
- Threat
- QAR2(K)
- Vars
- Q(i);N_GUARD,XR(G)::R(B),XS(a)
- P(k);N_GUARD::S(J)
- Q(i);N_GUARD::R(B),XS(a)
- S(d);N_GUARD::S(J),XS(d)
- Refutation
- P(k);
- Try
- Q(K);CHECK,XP(k)
- Vars
- K(h);S_FLIGHT,XP(I)::R(G)+S(H),DCHECK
- Q(i);P_SPINQ(i)::S(H)
- Refutation
- R(m);XQ(K)
- Try
- Actual
- P(F);
- Threat
- QAR2(K)
- Vars
- Q(i);N_GUARD,XP(F)::R(B),XS(a)
- B(l);OGATE,XS(H)::QAB1(K),XB(l)
- S(d);XR(G)::S(J),XS(d)
- P(k);N_GUARD::S(J)
- Q(i);N_GUARD::R(B),XS(a)
- P(k);N_GUARD::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).