MESON Chess Problem Database
Problem Display
PID: 219495 (3r1b2/2B4q/N1Q5/4P3/2pk3p/R1N5/br3P2/5B1K w - - 0 1)
Ernstberger, Walter
Schach-Report, 1988
#2
9 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qe4+
- 2.Qxe4#
- 1...Qg8
- 2.Qe4#
- 1...Qh5
- 2.Qe4#
- 1...Qh6
- 2.Qe4#
- 1...Qxc7
- 2.Qe4#
- 1...Qd7
- 2.Qe4#
- 1...Qe7
- 2.Qe4#
- 1...Qf7
- 2.Qe4#
- 1...Qg7
- 2.Qe4#
- 1...Qh8
- 2.Qe4#
- 1...Rb1
- 2.Se2#
- 1...Rc2
- 2.Sb5#
- 1...Rd2
- 2.Sb5#
- 1...Re2
- 2.Sxe2#
- 2.Sb5#
- 1...Rxf2
- 2.Sb5#
- 1...Rb3
- 2.Qxc4#
- 1...Rb4
- 2.Se2#
- 1...Rb5
- 2.Se2#
- 2.Sxb5#
- 1...Rb6
- 2.Se2#
- 1...Rb7
- 2.Se2#
- 1...Rbb8
- 2.Se2#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Qc5#
- 1...Ra8
- 2.Qd5#
- 1...Rdb8
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Re8
- 2.Qd5#
- 1...Bb1
- 2.Qxc4#
- 1...Bb3
- 2.Sb5#
- 1...Bb4
- 2.Sb5#
- 1...Bc5
- 2.Qxc5#
- 1...Bd6
- 2.Qd5#
- 1...Bh6
- 2.Qc5#
- 1...Bg7
- 2.Qc5#
- 1...Qe4+
- Tries
- 1.Bd6?
- threat
- 2.Qd5#
- 2.Qc5#
- 1...Qe4+
- 2.Qxe4#
- 1...Rxf2
- 2.Sb5#
- 2.Qc5#
- 2.Qb6#
- 1...Rxd6
- 2.Qc5#
- 1...Bxd6
- 2.Qd5#
- 1...Re2
- 2.Sxe2#
- 2.Sb5#
- 2.Qd5#
- 1...Rb3
- 2.Qxc4#
- 1...Bb3
- 2.Sb5#
- 1...Qg8
- 2.Qe4#
- 2.Qc5#
- 1...Qa7
- 2.Qe4#
- 2.Qd5#
- 1...Qc7
- 2.Qe4#
- 2.Qd5#
- 1...Qf7
- 2.Qe4#
- 2.Qc5#
- 1...Rb5
- 2.Se2#
- 2.Sxb5#
- 1...Rc8
- 2.Qd5#
- 1...Qb7!
- threat
- 1.Qb6+?
- 1...Bc5
- 2.Qxc5#
- 1...Rxb6!
- 1...Bc5
- 1.Bd6?
- Keys
- 1.Rb3!
- threat
- 2.Sb5#
- 2.Qxc4#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxc7
- 2.Qe4#
- 1...Rxf2
- 2.Sb5#
- 1...Rxb3
- 2.Qxc4#
- 1...Bxb3
- 2.Sb5#
- 1...cxb3
- 2.Sb5#
- 2.Qc4#
- 1...Re2
- 2.Sxe2#
- 2.Sb5#
- 1...Rd6
- 2.Qc5#
- 1...Bd6
- 2.Qd5#
- 1...Qd3
- 2.Sb5#
- 1...Qg8
- 2.Sb5#
- 2.Qe4#
- 1...Qf7
- 2.Sb5#
- 2.Qe4#
- 1...Rd5
- 2.Qxd5#
- 2.Qxc4#
- 1...Rb8
- 2.Qd5#
- 2.Qxc4#
- 1...Bc5
- 2.Sb5#
- 2.Qxc5#
- threat
- 1.Rb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 25
- Sets
- Q(f);CHECK,N_GUARD::QAR1(H),XQ(f)
- Q(f);N_GUARD::QAR1(H)
- Q(f);N_GUARD,XB(I)::QAR1(H)
- R(b);N_GUARD,P_PINB(A)::S(E)
- R(b);N_GUARD::S(E)
- R(b);N_GUARD,XP(C)::S(E)
- R(b);S_CUTB(a)::QAR1(H),XP(c)
- R(g);N_GUARD::QAR1(H),XR(g)
- R(g);S_CUTB(h)::QAB1(H)
- R(g);N_GUARD::QAR1(H)
- B(a);N_GUARD::QAR1(H),XP(c)
- B(a);S_CUTR(b)::S(E)
- B(h);S_CUTR(b)::S(E)
- B(h);N_GUARD::QAB1(H),XB(h)
- B(h);S_CUTR(g)::QAR1(H)
- B(h);N_GUARD::QAB1(H)
- Tries
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,N_GUARD::QAR1(H),XQ(f)
- R(g);XB(I)::QAB1(H)
- B(h);XB(I)::QAR1(H)
- R(b);S_CUTB(a)::QAR1(H),XP(c)
- B(a);S_CUTR(b)::S(E)
- R(g);::QAR1(H)
- Refutation
- Q(f);P_PINQ(H)
- Try
- Q(H);CHECK
- Vars
- B(h);N_GUARD,P_SPINB(h)::QAB1(H),XB(h)
- Refutation
- R(b);XQ(H)
- Try
- Actual
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,N_GUARD::QAR1(H),XQ(f)
- Q(f);N_GUARD,XB(I)::QAR1(H)
- R(b);XP(C)::S(E)
- R(b);XR(D)::QAR1(H),XP(c)
- B(a);XR(D)::S(E)
- R(g);S_CUTB(h)::QAB1(H)
- B(h);S_CUTR(g)::QAR1(H)
- Q(f);::S(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).