MESON Chess Problem Database
Problem Display
PID: 234368 (2Q1R3/nP2RP2/1p3p2/3BN3/1P1kP2p/KpN4q/1n2PP2/8 w - - 0 1)
Ellerman, Arnoldo
Revista Romana de Sah, 1934
#2
13 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sf3#
- 2.e3#
- 1...Qg2
- 2.e3#
- 1...Qg4
- 2.e3#
- 1...Qf5
- 2.e3#
- 1...Qe6
- 2.Sf3#
- 1...Qd7
- 2.Sf3#
- 2.e3#
- 1...Qh1
- 2.e3#
- 1...Qh2
- 2.Sf3#
- 2.e3#
- 1...Qf3
- 2.Sxf3#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4+
- 2.Qxc4#
- 1...Sb5+
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sxc8
- 2.Sb5#
- 1...b5
- 2.Qc5#
- 1...Qf1
- Tries
- 1.Kxb2?
- threat
- 2.Qc4#
- 1...Qxc3+
- 2.Qxc3#
- 1...Qxc8
- 2.Sf3#
- 2.e3#
- 1...Sxc8
- 2.Sb5#
- 2.Sc6#
- 1...Qe6
- 2.Sf3#
- 1...Sc6
- 2.Sb5#
- 2.Sxc6#
- 1...b5
- 2.Qc5#
- 1...Qd3!
- threat
- 1.Sc6+?
- 1...Sxc6
- 2.Sb5#
- 1...Kxc3!
- 1...Sxc6
- 1.Rd8?
- 1...Sc4+
- 2.Qxc4#
- 1...Sb5+
- 2.Sxb5#
- 1...Qxc3
- 2.Bc6#
- 1...Sxc8
- 2.Sb5#
- 1...fxe5
- 2.Be6#
- 1...Qe6
- 2.Sf3#
- 1...Sc6
- 2.Sb5#
- 1...Qd3
- 2.Bxb3#
- 1...Qf1
- 2.Sf3#
- 2.Bxb3#
- 2.e3#
- 1...Qg2
- 2.Bxb3#
- 2.e3#
- 1...Qg4
- 2.e3#
- 1...Qf5
- 2.e3#
- 1...Qd7
- 2.Sf3#
- 2.e3#
- 1...Qh1
- 2.Bxb3#
- 2.e3#
- 1...Qh2
- 2.Sf3#
- 2.Bxb3#
- 2.e3#
- 1...Qe3
- 2.Bxb3#
- 1...Qf3
- 2.Sxf3#
- 2.Bxb3#
- 1...Qg3
- 2.Bxb3#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sa4
- 2.Qc4#
- 1...b5
- 2.Qc5#
- 1...f5
- 2.Bxb3#
- 1...Qxc8!
- 1...Sc4+
- 1.Qxh3?
- threat
- 2.Qe3#
- 1...Sb5+
- 2.Sxb5#
- 1...Sd3
- 2.Qxd3#
- 1...Sd1
- 2.Qd3#
- 1...Sc4+!
- threat
- 1.Kxb2?
- Keys
- 1.Rd7!
- 1...Sc4+
- 2.Qxc4#
- 1...Sb5+
- 2.Sxb5#
- 1...Qxd7
- 2.Sf3#
- 2.e3#
- 1...Qxc3
- 2.Bc6#
- 1...Sxc8
- 2.Sb5#
- 1...fxe5
- 2.Be6#
- 1...Qe6
- 2.Sf3#
- 1...Sc6
- 2.Sb5#
- 1...Qd3
- 2.Bxb3#
- 1...Qf1
- 2.Sf3#
- 2.Bxb3#
- 2.e3#
- 1...Qg2
- 2.Bxb3#
- 2.e3#
- 1...Qg4
- 2.e3#
- 1...Qf5
- 2.e3#
- 1...Qh1
- 2.Bxb3#
- 2.e3#
- 1...Qh2
- 2.Sf3#
- 2.Bxb3#
- 2.e3#
- 1...Qe3
- 2.Bxb3#
- 1...Qf3
- 2.Sxf3#
- 2.Bxb3#
- 1...Qg3
- 2.Bxb3#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sa4
- 2.Qc4#
- 1...b5
- 2.Qc5#
- 1...f5
- 2.Bxb3#
- 1...Sc4+
- 1.Rd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- Q(c);N_GUARD::P(A)
- Q(c);N_GUARD::S(H)
- Q(c);N_GUARD::S(H),XQ(c)
- S(a);N_GUARD::QAR1(L)
- S(a);CHECK,N_GUARD::QAR1(L),XS(a)
- S(h);CHECK,N_GUARD::S(D),XS(h)
- S(h);N_GUARD::S(D)
- S(h);N_GUARD,XQ(L)::S(D)
- P(f);N_GUARD::QAB1(L)
- Tries
- Try
- K(C);S_FLIGHT,XS(a)
- Threat
- QAR1(L)
- Vars
- Q(c);CHECK,OGATE,XS(D)::QAB1(L),XQ(c)
- Q(c);N_GUARD::S(H)
- P(f);N_GUARD::QAB1(L)
- Refutation
- Q(c);
- Try
- S(H);CHECK
- Vars
- S(h);XS(H)::S(D)
- Refutation
- K(d);S_FLIGHT,XS(D)
- Try
- R(M);
- Vars
- S(a);CHECK,N_GUARD::QAR1(L),XS(a)
- S(h);CHECK,N_GUARD::S(D),XS(h)
- Q(c);N_GUARD,SBLOCK,XS(D)::R(M)+B(G)
- S(h);N_GUARD,XQ(L)::S(D)
- P(g);SBLOCK,XS(H)::R(M)+B(G)
- Q(c);N_GUARD::S(H)
- S(h);N_GUARD::S(D)
- Q(c);N_GUARD::R(M)+B(G),XP(b)
- Q(c);N_GUARD::P(A)
- S(a);N_GUARD::QAR1(L)
- P(f);N_GUARD::QAB1(L)
- P(g);S_CUTQ(c)::R(M)+B(G),XP(b)
- Refutation
- Q(c);XQ(L)
- Try
- Q(L);XQ(c)
- Threat
- QAB1(L)
- Vars
- S(h);CHECK,N_GUARD::S(D),XS(h)
- S(a);N_GUARD::QAR1(L),XS(a)
- S(a);N_GUARD::QAR1(L)
- Refutation
- S(a);CHECK
- Try
- Actual
- R(J);
- Vars
- S(a);CHECK,N_GUARD::QAR1(L),XS(a)
- S(h);CHECK,N_GUARD::S(D),XS(h)
- Q(c);N_GUARD,SBLOCK,XS(D)::R(J)+B(G)
- S(h);N_GUARD,XQ(L)::S(D)
- P(g);SBLOCK,XS(H)::R(J)+B(G)
- Q(c);N_GUARD::S(H)
- S(h);N_GUARD::S(D)
- Q(c);N_GUARD::R(J)+B(G),XP(b)
- Q(c);N_GUARD::P(A)
- S(a);N_GUARD::QAR1(L)
- P(f);N_GUARD::QAB1(L)
- P(g);S_CUTQ(c)::R(J)+B(G),XP(b)
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).