MESON Chess Problem Database
Problem Display
PID: 58311 (8/2K2RpN/1p2P1P1/4kP2/nR1b3Q/2pr1Pp1/B7/4q3 w - - 0 1)
Ellerman, Arnoldo
Al Hamishmar, 1945
#2
10 + 9
| 1997 | Ajedrez | 1954 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Qe4#
- 1...Qf2
- 2.Qe4#
- 1...Qa1
- 2.Qxg3#
- 2.Qe4#
- 1...Qb1
- 2.Qxg3#
- 2.Qe4#
- 1...Qc1
- 2.Qe4#
- 1...Qd1
- 2.Qxg3#
- 2.Qe4#
- 1...Qf1
- 2.Qxg3#
- 2.Qe4#
- 1...Qg1
- 2.Qe4#
- 1...Qh1
- 2.Qxg3#
- 2.Qe4#
- 1...Qe2
- 2.Qxg3#
- 1...Qe4
- 2.Qxe4#
- 1...Re3
- 2.Qxd4#
- 1...Rxf3
- 2.Qxd4#
- 1...Bg1
- 2.Qf4#
- 2.f4#
- 1...Bf2
- 2.Qf4#
- 2.f4#
- 1...Be3
- 2.Re4#
- 2.Qe4#
- 1...Bc5
- 2.Qf4#
- 2.f4#
- 1...Qd2
- Tries
- 1.Sg5?
- threat
- 2.f4#
- 1...Rxf3
- 2.Sxf3#
- 2.Qxd4#
- 1...Qd2
- 2.Qe4#
- 1...Qf2
- 2.Qe4#
- 1...Qc1
- 2.Qe4#
- 1...Qf1
- 2.Qxg3#
- 2.Qe4#
- 1...Qe4
- 2.Qxe4#
- 1...Be3
- 2.Re4#
- 2.Qe4#
- 1...Qe3!
- threat
- 1.Sf8?
- threat
- 2.Sd7#
- 1...Bg1
- 2.Qf4#
- 2.f4#
- 1...Bf2
- 2.Qf4#
- 2.f4#
- 1...Be3
- 2.Re4#
- 2.Qe4#
- 1...Bc5
- 2.Qf4#
- 2.f4#
- 1...Sc5!
- threat
- 1.Qd8?
- threat
- 2.Qd6#
- 1...Rxf3
- 2.Qxd4#
- 1...Bg1
- 2.f4#
- 1...Bf2
- 2.f4#
- 1...Be3
- 2.Re4#
- 1...Bc5
- 2.f4#
- 1...Kf4!
- threat
- 1.e7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Rxf3
- 2.Qxd4#
- 2.e8Q#
- 2.e8R#
- 1...Qe3
- 2.e8Q#
- 2.e8R#
- 1...Qd2
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qf2
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qa1
- 2.Qxg3#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qb1
- 2.Qxg3#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qc1
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qd1
- 2.Qxg3#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qf1
- 2.Qxg3#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qg1
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qh1
- 2.Qxg3#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Qe2
- 2.Qxg3#
- 2.e8Q#
- 2.e8R#
- 1...Qe4
- 2.Qxe4#
- 2.e8Q#
- 2.e8R#
- 1...Rd1
- 2.e8Q#
- 2.e8R#
- 1...Rd2
- 2.e8Q#
- 2.e8R#
- 1...Re3
- 2.Qxd4#
- 2.e8Q#
- 2.e8R#
- 1...Bg1
- 2.Qf4#
- 2.f4#
- 2.e8Q#
- 2.e8R#
- 1...Bf2
- 2.Qf4#
- 2.f4#
- 2.e8Q#
- 2.e8R#
- 1...Be3
- 2.Re4#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Bc5
- 2.Qf4#
- 2.f4#
- 1...Sb2
- 2.e8Q#
- 2.e8R#
- 1...c2
- 2.e8Q#
- 2.e8R#
- 1...g2
- 2.e8Q#
- 2.e8R#
- 1...b5
- 2.e8Q#
- 2.e8R#
- 1...Sc5!
- threat
- 1.Sg5?
- Keys
- 1.Rd7!
- threat
- 2.Rd5#
- 1...Kxf5
- 2.Qg5#
- 1...Qe4
- 2.Qxe4#
- 1...Bg1
- 2.Qf4#
- 1...Bf2
- 2.Qf4#
- 1...Be3
- 2.Qe4#
- 1...Bc5
- 2.Qf4#
- threat
- 1.Rd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::QAR1(D)
- Q(a);N_GUARD::QAB(D),XP(d)
- Q(a);N_GUARD::QAR1(D),XQ(a)
- R(c);N_GUARD::QAB1(D),XB(f)
- R(c);N_GUARD,XP(B)::QAB1(D),XB(f)
- Tries
- Try
- S(J);
- Threat
- P(B)
- Vars
- Q(a);N_GUARD::QAR1(D)
- Q(a);N_GUARD::QAR1(D),XQ(a)
- Refutation
- Q(a);
- Try
- S(J);
- Threat
- S(J)
- Refutation
- S(e);
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- R(c);N_GUARD,XP(B)::QAB1(D),XB(f)
- B(f);::P(B)
- B(f);OGATE::R1(C)
- Refutation
- K(g);P_SPINB(f),S_FLIGHT
- Try
- P(F);
- Threat
- P=Q
- Vars
- Q(a);::P=Q
- R(c);::P=Q
- S(e);::P=Q
- P(b);::P=Q
- P(d);::P=Q
- P(h);::P=Q
- Refutation
- S(e);
- Try
- Actual
- R(I);
- Threat
- R1(I)
- Vars
- K(g);OGATEB,P-FLIGHT,XP(E)::QAR1(D)
- Q(a);N_GUARD::QAR1(D),XQ(a)
- B(f);::QAB1(D)
- B(f);S_CUTQ(a)::QAR1(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).