MESON Chess Problem Database
Problem Display
PID: 219910 (K2N4/2b2Qp1/p1pB2p1/R5rq/1prk1P2/2N1R2b/1n3P2/1B6 w - - 0 1)
Ellerman, Arnoldo
Land og Folk, 1968
#2
10 + 12
| 6490 | yacpdb | 2020 |
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...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...bxc3
- 2.Re4#
- 1...c5
- 2.Sc6#
- 1...Qe2
- Tries
- 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...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...Bxd8!
- threat
- 1.Qxc4+?
- 1...Sxc4
- 2.Sxc6#
- 2.Rd3#
- 1...Kxc4!
- 1...Sxc4
- 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.Bf5?
- 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#
- threat
- 1.f5!
There are these versions: 234158
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 11
- Sets
- Q(g);N_GUARD::S(C),XQ(g)
- Q(g);N_GUARD::S(C)
- Q(g);N_GUARD,P_PINS(J)::S(C)
- R(d);SBLOCK,XS(C)::R1(D)
- R(f);S_CUTB(b)::S(J)
- B(b);N_GUARD::S(J)
- B(b);S_CUTR(f)::QAB(H),XP(l)
- B(b);N_GUARD::S(J),XB(b)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- P(c);SBLOCK,XS(C)::R1(D)
- P(i);S_CUTR(d)::S(J)
- Tries
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(f);XB(A)::S(J)
- B(b);XB(A)::QAB(H),XP(l)
- B(k);XB(G)::S(J)
- B(k);N_GUARD,XS(J)::B(G)
- P(j);XB(A)::S(J)
- S(a);N_GUARD::R1(D),XS(a)
- Q(g);N_GUARD,P_PINS(J)::S(C)
- R(d);N_GUARD::B(G),XR(d)
- Refutation
- R(d);XS(C)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(d);SBLOCK,XS(C)::R1(D)
- R(f);XR(F)::S(J)
- B(b);XR(F)::QAB(H),XP(l)
- B(k);XB(G)::S(J)
- P(j);XR(F)::S(J)
- S(a);N_GUARD::R1(D),XS(a)
- Q(g);N_GUARD,P_PINS(J)::S(C)
- R(d);N_GUARD::B(G),XR(d)
- Refutation
- B(k);XS(J)
- Try
- Q(H);CHECK,XR(d)
- Refutation
- K(e);P-FLIGHT,XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(H)::S(J)
- P(j);XQ(H)::S(J)
- R(d);::QAR1(H)
- Q(g);::S(J)
- B(b);::S(J)
- Refutation
- B(b);XQ(H)
- Try
- Actual
- P(E);
- Threat
- DUALS(2)
- Vars
- R(d);SBLOCK,XS(C)::R1(D)
- R(f);XP(E)::S(J)
- B(b);XP(E)::QAB(H),XP(l)
- B(k);XB(G)::S(J)
- B(k);N_GUARD,XS(J)::B(G)
- P(j);XP(E)::S(J)
- S(a);N_GUARD::R1(D),XS(a)
- Q(g);N_GUARD,P_PINS(J)::S(C)
- R(d);N_GUARD::B(G),XR(d)
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).