MESON Chess Problem Database
Problem Display
PID: 234158 (K2N4/2b2Qp1/p1pB2p1/R5rq/1nrk1P2/2N1R2b/5P2/1B6 w - - 0 1)
Ellerman, Arnoldo
Land og Folk, 1969
#2
10 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Sxe2#
- 1...Qh4
- 2.Se2#
- 1...Qh6
- 2.Se2#
- 1...Qh7
- 2.Se2#
- 1...Qh8
- 2.Se2#
- 1...Rxc3
- 2.Re4#
- 1...Rg4
- 2.Se2#
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Bf1
- 2.Se6#
- 1...Bg2
- 2.Se6#
- 1...Bf5
- 2.Qxg7#
- 1...Be6
- 2.Sxe6#
- 1...Sa2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sd5
- 2.Rd3#
- 1...Qe2
- Tries
- 1.Sxc6+?
- 1...Sxc6
- 2.Rd3#
- 1...Rxc6!
- 1...Sxc6
- 1.Bf5?
- threat
- 2.Se6#
- 2.Qxg7#
- 1...Rxf5
- 2.Se6#
- 1...Bxf5
- 2.Qxg7#
- 1...Bxd6
- 2.Se6#
- 1...Bxd8
- 2.Be5#
- 1...gxf5
- 2.Se6#
- 1...Sd3
- 2.Rxd3#
- 1...Qh6
- 2.Se2#
- 2.Se6#
- 1...Qh7
- 2.Se2#
- 2.Se6#
- 1...Qh8
- 2.Se2#
- 1...Rc5
- 2.Bxc5#
- 1...Sd5
- 2.Se6#
- 2.Rd3#
- 1...Rxc3!
- threat
- 1.Rf5?
- threat
- 2.Se6#
- 2.Qxg7#
- 1...Rxc3
- 2.Re4#
- 1...Rxf5
- 2.Se6#
- 1...Bxf5
- 2.Qxg7#
- 1...Bxd6
- 2.Se6#
- 1...gxf5
- 2.Se6#
- 1...Sd3
- 2.Rxd3#
- 1...Qh6
- 2.Se2#
- 2.Se6#
- 1...Qh7
- 2.Se2#
- 2.Se6#
- 1...Qh8
- 2.Se2#
- 1...Rc5
- 2.Bxc5#
- 1...Sd5
- 2.Se6#
- 2.Rd3#
- 1...Bxd8!
- threat
- 1.Qf5?
- threat
- 2.Se6#
- 2.Qe4#
- 1...Rxc3
- 2.Re4#
- 2.Qe4#
- 1...Rxf5
- 2.Se6#
- 1...Bxd8
- 2.Be5#
- 2.Qe4#
- 1...gxf5
- 2.Se6#
- 1...Rc5
- 2.Qe4#
- 1...Sd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Qf3
- 2.Se6#
- 1...Qh8
- 2.Se2#
- 2.Qe4#
- 1...Bg2
- 2.Se6#
- 1...Bxf5!
- threat
- 1.Sxc6+?
- Keys
- 1.f5!
- threat
- 2.Se6#
- 2.Qxg7#
- 1...Rxc3
- 2.Re4#
- 1...Rxf5
- 2.Se6#
- 1...Bxf5
- 2.Qxg7#
- 1...Bxd6
- 2.Se6#
- 1...Bxd8
- 2.Be5#
- 1...gxf5
- 2.Se6#
- 1...Sd3
- 2.Rxd3#
- 1...Qh6
- 2.Se2#
- 2.Se6#
- 1...Qh7
- 2.Se2#
- 2.Se6#
- 1...Qh8
- 2.Se2#
- 1...Rc5
- 2.Bxc5#
- 1...Sd5
- 2.Se6#
- 2.Rd3#
- threat
- 1.f5!
This is a version of 219910
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD::S(C),XQ(f)
- Q(f);N_GUARD::S(C)
- Q(f);N_GUARD,P_PINS(J)::S(C)
- R(c);SBLOCK,XS(C)::R1(D)
- R(e);S_CUTB(a)::S(J)
- B(a);N_GUARD::S(J)
- B(a);S_CUTR(e)::QAB(H),XP(k)
- B(a);N_GUARD::S(J),XB(a)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- Tries
- Try
- S(J);CHECK,XP(h)
- Vars
- S(b);XS(J)::R1(D)
- Refutation
- R(c);XS(J)
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(e);XB(A)::S(J)
- B(a);XB(A)::QAB(H),XP(k)
- B(j);XB(G)::S(J)
- B(j);N_GUARD,XS(J)::B(G)
- P(i);XB(A)::S(J)
- S(b);N_GUARD::R1(D),XS(b)
- Q(f);N_GUARD,P_PINS(J)::S(C)
- R(c);N_GUARD::B(G),XR(c)
- Refutation
- R(c);XS(C)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(c);SBLOCK,XS(C)::R1(D)
- R(e);XR(F)::S(J)
- B(a);XR(F)::QAB(H),XP(k)
- B(j);XB(G)::S(J)
- P(i);XR(F)::S(J)
- S(b);N_GUARD::R1(D),XS(b)
- Q(f);N_GUARD,P_PINS(J)::S(C)
- R(c);N_GUARD::B(G),XR(c)
- Refutation
- B(j);XS(J)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(e);XQ(H)::S(J)
- P(i);XQ(H)::S(J)
- R(c);::QAR1(H)
- Q(f);::S(J)
- B(a);::S(J)
- Refutation
- B(a);XQ(H)
- Try
- Actual
- P(E);
- Threat
- DUALS(2)
- Vars
- R(c);SBLOCK,XS(C)::R1(D)
- R(e);XP(E)::S(J)
- B(a);XP(E)::QAB(H),XP(k)
- B(j);XB(G)::S(J)
- B(j);N_GUARD,XS(J)::B(G)
- P(i);XP(E)::S(J)
- S(b);N_GUARD::R1(D),XS(b)
- Q(f);N_GUARD,P_PINS(J)::S(C)
- R(c);N_GUARD::B(G),XR(c)
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).