MESON Chess Problem Database
Problem Display
PID: 51593 (2n5/r1Qb4/p3P1pK/2p1p3/1Nq2k1p/4RBNP/3P2P1/b1r1B3 w - - 0 1)
Ellerman, Arnoldo
The Guardian, 1966
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sd5#
- 2.Re4#
- 1...Qa2
- 2.Sd3#
- 2.Re4#
- 1...Qe2
- 2.Sd5#
- 1...Qb3
- 2.Re4#
- 1...Qd3
- 2.Sxd3#
- 1...Qb5
- 2.Sd5#
- 2.Re4#
- 1...Qd5
- 2.Sxd5#
- 1...Qxe6
- 2.Sd3#
- 2.Re4#
- 1...Qc2
- 2.Sd5#
- 1...Qc3
- 2.Sd5#
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 1...Rc3
- 2.Qxe5#
- 1...Bd4
- 2.Re4#
- 1...Qf1
- Tries
- 1.Be4?
- threat
- 2.Rf3#
- 1...Qxe4
- 2.Rxe4#
- 1...hxg3
- 2.Bxg3#
- 1...Qf1
- 2.Sd5#
- 1...Qe2
- 2.Sxe2#
- 2.Sd5#
- 1...Qb3
- 2.Se2#
- 1...Qd3
- 2.Sxd3#
- 1...Qc3
- 2.Se2#
- 2.Sd5#
- 1...Rc3!
- threat
- 1.Bg4?
- threat
- 2.Rf3#
- 1...hxg3
- 2.Bxg3#
- 1...Qf1
- 2.Sd5#
- 2.Re4#
- 1...Qe2
- 2.Sxe2#
- 2.Sd5#
- 1...Qb3
- 2.Se2#
- 2.Re4#
- 1...Qd3
- 2.Sxd3#
- 1...Qd5
- 2.Se2#
- 2.Sxd5#
- 1...Qc3
- 2.Se2#
- 2.Sd5#
- 2.Re4#
- 1...Qe4
- 2.Se2#
- 2.Rxe4#
- 1...Rc3
- 2.Qxe5#
- 1...Bc6!
- threat
- 1.Bd5?
- threat
- 2.Rf3#
- 1...Qxd5
- 2.Sxd5#
- 1...Qf1
- 2.Re4#
- 1...Qb3
- 2.Re4#
- 1...Qd3
- 2.Sxd3#
- 1...Qc3
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 1...Rc3
- 2.Qxe5#
- 1...Qe2!
- threat
- 1.Bc6?
- threat
- 2.Rf3#
- 1...Qf1
- 2.Sd5#
- 2.Re4#
- 1...Qe2
- 2.Sd5#
- 1...Qb3
- 2.Re4#
- 1...Qd3
- 2.Sxd3#
- 1...Qd5
- 2.Sxd5#
- 1...Qc3
- 2.Sd5#
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 1...Rc3
- 2.Qxe5#
- 1...Bxc6!
- threat
- 1.Ba8?
- threat
- 2.Rf3#
- 1...Qf1
- 2.Sd5#
- 2.Re4#
- 1...Qe2
- 2.Sd5#
- 1...Qb3
- 2.Re4#
- 1...Qd3
- 2.Sxd3#
- 1...Qd5
- 2.Sxd5#
- 1...Qc3
- 2.Sd5#
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 1...Rc3
- 2.Qxe5#
- 1...Bc6!
- threat
- 1.Qd8?
- threat
- 2.Qxh4#
- 2.Qg5#
- 2.Qf6#
- 2.Qf8#
- 1...Qxe6
- 2.Sd3#
- 2.Re4#
- 2.Qg5#
- 1...Rxe1
- 2.Qxh4#
- 2.Qg5#
- 1...Bxe6
- 2.Qg5#
- 1...hxg3
- 2.Qg5#
- 2.Qf6#
- 2.Qf8#
- 1...e4
- 2.Qg5#
- 1...Bc6
- 2.Qxh4#
- 2.Qg5#
- 2.Qf6#
- 1...Qd3
- 2.Sxd3#
- 2.Qxh4#
- 2.Qg5#
- 1...Qc2
- 2.Sd5#
- 2.Qxh4#
- 2.Qg5#
- 1...Qe4
- 2.Rxe4#
- 2.Qxh4#
- 2.Qg5#
- 1...Ba4
- 2.Qxh4#
- 2.Qg5#
- 2.Qf6#
- 1...Bb5
- 2.Qxh4#
- 2.Qg5#
- 2.Qf6#
- 1...Be8
- 2.Qxh4#
- 2.Qg5#
- 2.Qf6#
- 1...Sd6
- 2.Qxh4#
- 2.Qg5#
- 1...g5
- 2.Qxg5#
- 2.Qf6#
- 2.Qf8#
- 1...Se7!
- threat
- 1.Be4?
- Keys
- 1.Bb7!
- threat
- 2.Rf3#
- 1...Bc6
- 2.Qf7#
- 1...Qf1
- 2.Sd5#
- 2.Re4#
- 1...Qe2
- 2.Sd5#
- 1...Qb3
- 2.Re4#
- 1...Qd3
- 2.Sxd3#
- 1...Qd5
- 2.Sxd5#
- 1...Qc3
- 2.Sd5#
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 1...Rc3
- 2.Qxe5#
- threat
- 1.Bb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(c);N_GUARD::S(H)
- Q(c);N_GUARD::R1(D)
- Q(c);N_GUARD::S(H),XQ(c)
- Q(c);N_GUARD::R1(D),XQ(c)
- R(b);S_CUTB(a)::QAB1(K),XP(g)
- B(a);S_CUTQ(c)::R1(D)
- Tries
- Try
- B(E);
- Threat
- R1(D)
- Vars
- Q(c);OGATE,XB(E)::R1(D),XQ(c)
- P(e);OGATE,XS(F)::B(A),XP(e)
- Q(c);N_GUARD::S(H)
- Q(c);N_GUARD::S(F)
- Q(c);N_GUARD::S(H),XQ(c)
- Refutation
- R(b);
- Try
- B(E);
- Threat
- R1(D)
- Vars
- P(e);OGATE,XS(F)::B(A),XP(e)
- Q(c);N_GUARD::S(H),XQ(c)
- R(b);S_CUTB(a)::QAB1(K),XP(g)
- Refutation
- B(k);
- Try
- B(E);
- Threat
- R1(D)
- Vars
- Q(c);XB(E)::S(H),XQ(c)
- Q(c);N_GUARD::R1(D)
- Q(c);N_GUARD::S(H),XQ(c)
- Q(c);N_GUARD::R1(D),XQ(c)
- R(b);S_CUTB(a)::QAB1(K),XP(g)
- Refutation
- Q(c);
- Try
- B(E);
- Threat
- R1(D)
- Vars
- Q(c);N_GUARD::S(H)
- Q(c);N_GUARD::R1(D)
- Q(c);N_GUARD::S(H),XQ(c)
- Q(c);N_GUARD::R1(D),XQ(c)
- R(b);S_CUTB(a)::QAB1(K),XP(g)
- Refutation
- B(k);XB(E)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- Q(c);N_GUARD::S(H)
- Q(c);N_GUARD::R1(D)
- Q(c);N_GUARD::S(H),XQ(c)
- Q(c);N_GUARD::R1(D),XQ(c)
- R(b);S_CUTB(a)::QAB1(K),XP(g)
- Refutation
- B(k);
- Try
- Q(K);N_PINP(g)
- Threat
- DUALS(4)
- Vars
- B(k);XP(I)::QAB1(K)
- P(g);::QAB1(K)
- Refutation
- S(l);
- Try
- Actual
- B(E);
- Threat
- R1(D)
- Vars
- B(k);OGATE::QAR(K)
- Q(c);N_GUARD::S(H)
- Q(c);N_GUARD::R1(D)
- Q(c);N_GUARD::S(H),XQ(c)
- Q(c);N_GUARD::R1(D),XQ(c)
- R(b);S_CUTB(a)::QAB1(K),XP(g)
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).