MESON Chess Problem Database
Problem Display
PID: 233495 (4n1R1/rR1Qb3/1N2rkpN/q7/b2n1B2/1B3p1p/4p2K/8 w - - 0 1)
Schreckenbach, Michael
Freie Presse, 1990
#2
8 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sd5#
- 1...Qd2
- 2.Sd5#
- 1...Qc3
- 2.Sd5#
- 1...Qb4
- 2.Sd5#
- 1...Qd5
- 2.Sxd5#
- 1...Qa6
- 2.Sd5#
- 1...Re3
- 2.Sg4#
- 1...Re4
- 2.Sg4#
- 1...Re5
- 2.Sg4#
- 1...Rxb6
- 2.Sg4#
- 2.Qxe7#
- 1...Rc6
- 2.Sg4#
- 2.Qxe7#
- 1...Rd6
- 2.Sg4#
- 2.Qxe7#
- 1...Bb5
- 2.Sd5#
- 1...Bxd7
- 2.Sxd7#
- 1...Ba3
- 2.Qf7#
- 1...Bb4
- 2.Qf7#
- 1...Bc5
- 2.Sd5#
- 2.Qf7#
- 1...Bd6
- 2.Qf7#
- 1...Bd8
- 2.Rf8#
- 2.Qf7#
- 1...Bf8
- 2.Rxf8#
- 2.Qf7#
- 1...Sc2
- 2.Qxe6#
- 1...Sb5
- 2.Sd5#
- 2.Qxe6#
- 1...Sf5
- 2.Qxe6#
- 1...Sc6
- 2.Qxe6#
- 1...Qe1
- Tries
- 1.Bxe6?
- threat
- 2.Sg4#
- 2.Qxe7#
- 1...Rxb7
- 2.Sg4#
- 1...Sxe6
- 2.Qxe7#
- 1...Qb4
- 2.Sd5#
- 2.Sg4#
- 1...Qc5
- 2.Sg4#
- 1...Qf5
- 2.Qxe7#
- 1...Qg5
- 2.Qxe7#
- 1...Qh5
- 2.Qxe7#
- 1...Ba3
- 2.Sg4#
- 2.Qf7#
- 1...Bb4
- 2.Sg4#
- 2.Qf7#
- 1...Bc5
- 2.Sd5#
- 2.Sg4#
- 2.Qf7#
- 1...Bd6
- 2.Sg4#
- 2.Qf7#
- 1...Bd8
- 2.Sg4#
- 2.Rf8#
- 2.Qf7#
- 1...Bf8
- 2.Sg4#
- 2.Rxf8#
- 2.Qf7#
- 1...Sf5
- 2.Sg4#
- 1...Sc6
- 2.Sg4#
- 1...Sc7
- 2.Sg4#
- 1...Bxd7!
- threat
- 1.Rf8+?
- 1...Bxf8
- 2.Qf7#
- 1...Kg7!
- 1...Bxf8
- 1.Qb5?
- threat
- 2.Sd5#
- 2.Sd7#
- 2.Bg5#
- 1...Qxb6
- 2.Bg5#
- 2.Qg5#
- 1...Rxb6
- 2.Sg4#
- 2.Bg5#
- 1...Rxb7
- 2.Sd5#
- 2.Bg5#
- 1...Bxb3
- 2.Sd7#
- 2.Bg5#
- 1...Bxb5
- 2.Sd5#
- 1...Sxb5
- 2.Sd5#
- 2.Sd7#
- 1...Qd2
- 2.Sd5#
- 2.Sd7#
- 2.Qg5#
- 1...Re3
- 2.Sd7#
- 2.Sg4#
- 2.Bg5#
- 1...Re4
- 2.Sd7#
- 2.Sg4#
- 2.Bg5#
- 1...Re5
- 2.Sd7#
- 1...Rc6
- 2.Sd7#
- 2.Sg4#
- 2.Bg5#
- 1...Rd6
- 2.Sg4#
- 2.Bg5#
- 1...Ba3
- 2.Sd5#
- 2.Sg4#
- 2.Bg5#
- 1...Bb4
- 2.Sd5#
- 2.Sg4#
- 2.Bg5#
- 1...Bc5
- 2.Sd5#
- 1...Bd6
- 2.Sd5#
- 2.Sg4#
- 1...Bd8
- 2.Sd5#
- 2.Sg4#
- 2.Bg5#
- 2.Rf8#
- 1...Bf8
- 2.Sd5#
- 2.Sg4#
- 2.Bg5#
- 2.Rxf8#
- 1...Sf5
- 2.Sd5#
- 2.Sd7#
- 1...Sc7
- 2.Sd7#
- 2.Bg5#
- 1...g5
- 2.Sd5#
- 2.Sd7#
- 2.Bxg5#
- 1...Qxb5!
- threat
- 1.Qxe8?
- threat
- 2.Rxg6#
- 2.Qxg6#
- 2.Qf7#
- 1...Qf5
- 2.Qf7#
- 1...Qg5
- 2.Qf7#
- 1...Qh5
- 2.Qf7#
- 1...g5
- 2.Rg6#
- 2.Qg6#
- 2.Qf7#
- 1...Bxe8!
- threat
- 1.Qxd4+?
- 1...Qe5
- 2.Sd5#
- 1...Re5!
- 1...Qe5
- 1.Bxe6?
- Keys
- 1.Qd5!
- threat
- 2.Bg5#
- 1...Qxd5
- 2.Sxd5#
- 1...Qd2
- 2.Qg5#
- 1...Re5
- 2.Qf7#
- 1...Bd6
- 2.Sg4#
- 1...Sf5
- 2.Qxe6#
- 1...g5
- 2.Bxg5#
- threat
- 1.Qd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(f);N_GUARD::S(D)
- Q(f);N_GUARD::S(D),XQ(f)
- R(g);::S(E)
- B(d);S_CUTQ(f)::S(D)
- B(d);XQ(G)::S(D),XB(d)
- B(k);OGATE::QAR1(G)
- B(k);OGATE,P_PINB(C)::QAR1(G)
- S(e);N_GUARD::QAR1(G),XR(g)
- Tries
- Try
- B(B);XR(g)
- Threat
- DUALS(2)
- Vars
- R(j);XR(F)::S(E)
- S(e);XB(B)::QAB1(G),XB(k)
- Q(f);::S(E)
- Q(f);::QAB1(G),XB(k)
- S(e);::S(E)
- S(l);::S(E)
- Refutation
- B(d);XQ(G)
- Try
- R(H);CHECK
- Vars
- B(k);OGATE,XR(H)::QAR1(G)
- Refutation
- K(h);P_SPINB(k),S_FLIGHT
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- B(d);XQ(G)::S(D)
- R(g);::S(D)
- B(k);::S(D)
- Refutation
- Q(f);XQ(G)
- Try
- Q(G);XS(l)
- Threat
- DUALS(3)
- Vars
- Q(f);::QAR1(G)
- Refutation
- B(d);XQ(G)
- Try
- Q(G);CHECK,XS(e)
- Vars
- Q(f);P_PINB(C),P_SPINQ(f)::S(D)
- Refutation
- R(g);P_SPINR(g)
- Try
- Actual
- Q(G);
- Threat
- B(C)
- Vars
- Q(f);XQ(G)::S(D),XQ(f)
- Q(f);N_GUARD::QAB1(G)
- R(g);OGATE::QAR1(G)
- B(k);P_PINB(C)::S(E)
- S(e);N_GUARD::QAR1(G),XR(g)
- P(i);::B(C),XP(i)
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).