MESON Chess Problem Database
Problem Display
PID: 48928 (8/Np6/3B4/1B1p4/3kb3/1ppP1Rp1/2q1Q1K1/3R2N1 w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1932
#2
9 + 8
| 5137 | 1001 Problemas | 1945 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Qe3#
- 1...Qxd1
- 2.Qe3#
- 1...Qxd3
- 2.Qe3#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bxd3
- 2.Rf4#
- 1...Bxf3+
- 2.Sxf3#
- 1...b6
- 2.Sc6#
- 1...Qb1
- Tries
- 1.Ba4?
- threat
- 2.Sb5#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bxf3+
- 2.Sxf3#
- 1...Bxd3
- 2.Rf4#
- 1...b5
- 2.Sxb5#
- 2.Sc6#
- 1...Qxd3!
- threat
- 1.Bc6?
- threat
- 2.Sb5#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bxf3+
- 2.Sxf3#
- 1...Bxd3
- 2.Rf4#
- 1...bxc6
- 2.Sxc6#
- 1...b5
- 2.Sxb5#
- 1...Qxd3!
- threat
- 1.Bd7?
- threat
- 2.Sb5#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bxf3+
- 2.Sxf3#
- 1...Bxd3
- 2.Rf4#
- 1...b5
- 2.Sxb5#
- 2.Sc6#
- 1...Qxd3!
- threat
- 1.Be8?
- threat
- 2.Sb5#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bxf3+
- 2.Sxf3#
- 1...Bxd3
- 2.Rf4#
- 1...b5
- 2.Sxb5#
- 2.Sc6#
- 1...Qxd3!
- threat
- 1.Qxc2?
- threat
- 2.Se2#
- 2.dxe4#
- 1...Bxd3
- 2.Qxd3#
- 1...bxc2
- 2.Se2#
- 1...Bf5
- 2.Se2#
- 1...Bg6
- 2.Se2#
- 1...Bh7
- 2.Se2#
- 1...Bxf3+!
- threat
- 1.Qd2?
- threat
- 2.Se2#
- 1...Bxf3+
- 2.Sxf3#
- 1...Qxd1
- 2.Qe3#
- 1...Bxd3
- 2.Rf4#
- 1...Qxd2+!
- threat
- 1.dxe4+?
- 1...Qxd1
- 2.Qe3#
- 1...Qd3
- 2.Rdxd3#
- 2.Rfxd3#
- 2.Qxd3#
- 2.Qe3#
- 1...Qd2!
- 1...Qxd1
- 1.Ba4?
- Keys
- 1.Ba6!
- threat
- 2.Sb5#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bxf3+
- 2.Sxf3#
- 1...Qxd3
- 2.Qe3#
- 1...Bxd3
- 2.Rf4#
- 1...bxa6
- 2.Sc6#
- 1...b5
- 2.Sxb5#
- 2.Sc6#
- threat
- 1.Ba6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(a);N_PINQ(C)::QAB1(C)
- Q(a);N_PINQ(C),XR(A)::QAB1(C)
- Q(a);N_PINQ(C),P_SPINQ(a),XP(E)::QAB1(C)
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- B(f);N_PINR(F),P_SPINB(f),XP(E)::R(F)
- B(f);CHECK,XR(F)::S(B),XB(f)
- P(h);N_GUARD::S(I)
- Tries
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- B(f);CHECK,XR(F)::S(B),XB(f)
- B(f);N_PINR(F),P_SPINB(f),XP(E)::R(F)
- Refutation
- Q(a);N_PINQ(C),P_SPINQ(a),XP(E)
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- B(f);CHECK,XR(F)::S(B),XB(f)
- B(f);N_PINR(F),P_SPINB(f),XP(E)::R(F)
- P(h);XB(G)::S(I),XP(h)
- P(h);::S(I),XP(h)
- Refutation
- Q(a);N_PINQ(C),P_SPINQ(a),XP(E)
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- B(f);CHECK,XR(F)::S(B),XB(f)
- B(f);N_PINR(F),P_SPINB(f),XP(E)::R(F)
- Refutation
- Q(a);N_PINQ(C),P_SPINQ(a),XP(E)
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- B(f);CHECK,XR(F)::S(B),XB(f)
- B(f);N_PINR(F),P_SPINB(f),XP(E)::R(F)
- Refutation
- Q(a);N_PINQ(C),P_SPINQ(a),XP(E)
- Try
- Q(C);N_SPINQ(C),XQ(a)
- Threat
- DUALS(2)
- Vars
- B(f);N_PINR(F),OGATE,P_SPINB(f),XP(E)::QAR1(C),XB(f)
- P(b);XQ(C)::S(B)
- B(f);N_PINR(F)::S(B)
- Refutation
- B(f);CHECK,XR(F)
- Try
- Q(C);
- Threat
- S(B)
- Vars
- B(f);CHECK,XR(F)::S(B),XB(f)
- Q(a);N_PINQ(C),XR(A)::QAB1(C)
- B(f);N_PINR(F),P_SPINB(f),XP(E)::R(F)
- Refutation
- Q(a);CHECK,XQ(C)
- Try
- P(E);CHECK,N_SPINR(F),XB(f)
- Vars
- Q(a);N_PINQ(C),XR(A)::QAB1(C)
- Refutation
- Q(a);P_SPINQ(a)
- Try
- Actual
- B(G);
- Threat
- S(I)
- Vars
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- B(f);CHECK,XR(F)::S(B),XB(f)
- Q(a);N_PINQ(C),P_SPINQ(a),XP(E)::QAB1(C)
- B(f);N_PINR(F),P_SPINB(f),XP(E)::R(F)
- P(h);N_GUARD,XB(G)::S(I)
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).