MESON Chess Problem Database
Problem Display
PID: 140505 (4nN1B/7p/6qR/1BPkr1N1/1K2p3/2P5/6Q1/1b6 w - - 0 1)
Ellerman, Arnoldo
Problemas, 1945
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Bc4#
- 2.Bc6#
- 1...Qh5
- 2.Bc4#
- 2.Bc6#
- 1...Qf7
- 2.Bc4#
- 2.Bc6#
- 1...Qxg5
- 2.Bc4#
- 2.Bc6#
- 1...Qc6
- 2.Bc4#
- 2.Bxc6#
- 1...Qg7
- 2.Bc4#
- 2.Bc6#
- 1...Qg8
- 2.Bc4#
- 2.Bc6#
- 1...Rf5
- 2.c4#
- 1...Rxg5
- 2.c4#
- 1...Re6
- 2.c4#
- 1...Re7
- 2.c4#
- 1...Ba2
- 2.Qxa2#
- 2.Qd2#
- 1...Qf5
- Tries
- 1.Sge6?
- threat
- 2.Sf4#
- 2.c4#
- 1...Qxh6
- 2.c4#
- 1...Rxe6
- 2.c4#
- 1...Qf5
- 2.c4#
- 1...Qf7
- 2.c4#
- 1...Qg3
- 2.c4#
- 1...Qg4
- 2.c4#
- 1...Qg5
- 2.c4#
- 1...Qf6
- 2.c4#
- 1...Rf5
- 2.c4#
- 1...Ba2
- 2.Sf4#
- 2.Qxa2#
- 2.Qd2#
- 1...Bd3
- 2.Sf4#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Qxe6!
- threat
- 1.Sfe6?
- threat
- 2.Sf4#
- 2.c4#
- 1...Qxg5
- 2.c4#
- 1...Rxg5
- 2.Sf4#
- 1...Rxe6
- 2.c4#
- 1...Qf5
- 2.c4#
- 1...Qf7
- 2.c4#
- 1...Qf6
- 2.c4#
- 1...Rf5
- 2.c4#
- 1...Ba2
- 2.Sf4#
- 2.Qxa2#
- 2.Qd2#
- 1...Bd3
- 2.Sf4#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Qxe6!
- threat
- 1.Sxg6?
- threat
- 2.Sf4#
- 1...Rf5
- 2.Se7#
- 2.c4#
- 1...hxg6!
- threat
- 1.Qg1?
- threat
- 2.Qd4#
- 2.c4#
- 1...Ba2
- 2.Qd4#
- 2.Qd1#
- 1...Bd3
- 2.Qd4#
- 1...Sd6
- 2.Qd4#
- 1...e3!
- threat
- 1.Qf2?
- threat
- 2.Qd4#
- 2.c4#
- 1...Ba2
- 2.Qd4#
- 2.Qxa2#
- 2.Qd2#
- 1...Bd3
- 2.Qd4#
- 1...Sd6
- 2.Qd4#
- 1...e3!
- threat
- 1.Sge6?
- Keys
- 1.Sxe4!
- threat
- 2.Sf6#
- 1...Qxe4+
- 2.Bc4#
- 1...Rxe4+
- 2.c4#
- 1...Qxg2
- 2.Bc6#
- 1...Bxe4
- 2.Qa2#
- 1...Qg4
- 2.Bc4#
- 2.Bc6#
- 1...Qf6
- 2.Sxf6#
- 1...Rf5
- 2.c4#
- 1...Rg5
- 2.c4#
- 1...Rh5
- 2.c4#
- 1...Re6
- 2.c4#
- 1...Re7
- 2.c4#
- 1...Sf6
- 2.Sxf6#
- threat
- 1.Sxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(d);::P(B)
- R(d);XS(F)::P(B)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(e);XR(G)::P(B)
- R(d);XS(F)::P(B)
- Q(e);::P(B)
- R(d);::P(B)
- B(a);::S(F)
- Refutation
- Q(e);XS(F)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(F)::P(B)
- R(d);XS(F)::S(H)
- R(d);XS(H)::P(B)
- Q(e);::P(B)
- R(d);::P(B)
- B(a);::S(H)
- Refutation
- Q(e);XS(H)
- Try
- S(H);XQ(e)
- Threat
- S(H)
- Refutation
- P(f);XS(H)
- Try
- Q(A);N_PINP(b)
- Threat
- DUALS(2)
- Vars
- B(a);::QAR1(A)
- S(g);::QAR1(A)
- Refutation
- P(b);
- Try
- Q(A);N_PINP(b)
- Threat
- DUALS(2)
- Vars
- B(a);::QAR1(A)
- S(g);::QAR1(A)
- Refutation
- P(b);
- Try
- Actual
- S(F);XP(b)
- Threat
- QAB(A)+S(F),DCHECK
- Vars
- Q(e);CHECK,P_SPINQ(e),XS(F)::B(D)
- R(d);CHECK,P_SPINR(d),XS(F)::P(B)
- Q(e);N_GUARD,XQ(A)::B(D)
- B(a);N_GUARD,P_SPINB(a),SBLOCK,XS(F)::QAB(A)
- Q(e);::QAB(A)+S(F),DCHECK,XQ(e)
- R(d);::P(B)
- S(g);::QAB(A)+S(F),DCHECK,XS(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).