MESON Chess Problem Database
Problem Display
PID: 218451 (4R3/8/3p2pK/1Bnk2p1/n2Pp1P1/b3Q3/N2R1rPB/8 w - - 0 1)
Elson, Jacob
Philadelphia Times, 1881
#2
10 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.dxc5#
- 1...Re2
- 2.Qxg5#
- 1...Rxg2
- 2.Qxg5#
- 1...Rf3
- 2.dxc5#
- 1...Rf4
- 2.dxc5#
- 1...Rf5
- 2.dxc5#
- 1...Rf6
- 2.dxc5#
- 1...Rf7
- 2.dxc5#
- 1...Rf8
- 2.dxc5#
- 1...Bc1
- 2.Sb4#
- 1...Bb2
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...Sb3
- 2.Qxb3#
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qb3#
- 2.Qxe4#
- 1...Se6
- 2.Qb3#
- 1...Sb7
- 2.Qb3#
- 2.Qxe4#
- 1...Sd7
- 2.Qb3#
- 2.Qxe4#
- 1...Rf1
- Tries
- 1.Bg3?
- 1...Rxg2
- 2.Qxg5#
- 1...Rf1
- 2.dxc5#
- 1...Re2
- 2.Qxg5#
- 1...Rf3
- 2.dxc5#
- 1...Rf4
- 2.dxc5#
- 1...Rf5
- 2.dxc5#
- 1...Rf6
- 2.dxc5#
- 1...Rf7
- 2.dxc5#
- 1...Rf8
- 2.dxc5#
- 1...Bc1
- 2.Sb4#
- 1...Bb2
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...Sb3
- 2.Qxb3#
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qb3#
- 2.Qxe4#
- 1...Se6
- 2.Qb3#
- 1...Sb7
- 2.Qb3#
- 2.Qxe4#
- 1...Sd7
- 2.Qb3#
- 2.Qxe4#
- 1...Rxd2!
- 1...Rxg2
- 1.Rxf2?
- 1...Bc1
- 2.Sb4#
- 1...Bb2
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...Sb3
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Se6!
- 1...Bc1
- 1.Re7?
- 1...Rxg2
- 2.Qxg5#
- 1...Rf1
- 2.dxc5#
- 1...Re2
- 2.Qxg5#
- 1...Rf3
- 2.dxc5#
- 1...Rf4
- 2.dxc5#
- 1...Rf5
- 2.dxc5#
- 1...Rf6
- 2.dxc5#
- 1...Rf7
- 2.dxc5#
- 1...Rf8
- 2.dxc5#
- 1...Bc1
- 2.Sb4#
- 1...Bb2
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...Sb3
- 2.Qxb3#
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qb3#
- 2.Qxe4#
- 1...Se6
- 2.Qb3#
- 1...Sb7
- 2.Qb3#
- 2.Qxe4#
- 1...Sd7
- 2.Qb3#
- 2.Qxe4#
- 1...Rxd2!
- 1...Rxg2
- 1.Qe2?
- threat
- 2.Qc4#
- 1...Sd3
- 2.Qxe4#
- 1...Sb2
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Rxe2!
- threat
- 1.Qxa3?
- threat
- 2.Sb4#
- 1...Sd3
- 2.Qxd6#
- 1...Sa6
- 2.Qxd6#
- 2.Qb3#
- 1...Rxd2!
- threat
- 1.Bg3?
- Keys
- 1.Bg1!
- 1...Rxd2
- 2.Qxg5#
- 1...Rxg2
- 2.Qxg5#
- 1...Rf1
- 2.dxc5#
- 1...Re2
- 2.Qxg5#
- 1...Rf3
- 2.dxc5#
- 1...Rf4
- 2.dxc5#
- 1...Rf5
- 2.dxc5#
- 1...Rf6
- 2.dxc5#
- 1...Rf7
- 2.dxc5#
- 1...Rf8
- 2.dxc5#
- 1...Bc1
- 2.Sb4#
- 1...Bb2
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...Sb3
- 2.Qxb3#
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qb3#
- 2.Qxe4#
- 1...Se6
- 2.Qb3#
- 1...Sb7
- 2.Qb3#
- 2.Qxe4#
- 1...Sd7
- 2.Qb3#
- 2.Qxe4#
- 1...Rxd2
- 1.Bg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::R(B)+P(F),XS(e)
- R(a);N_GUARD::QAR(E),XP(g)
- R(a);N_GUARD,XP(C)::QAR(E),XP(g)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(e);N_GUARD::QAB1(E),XP(d)
- S(e);N_GUARD::QAB(E)
- Tries
- Try
- B(D);
- Vars
- R(a);N_GUARD,XP(C)::QAR(E),XP(g)
- R(a);N_GUARD::R(B)+P(F),XS(e)
- R(a);N_GUARD::QAR(E),XP(g)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(e);N_GUARD::QAB1(E),XP(d)
- S(e);N_GUARD::QAB(E)
- Refutation
- R(a);XR(B)
- Try
- R(B);XR(a)
- Vars
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(e);N_GUARD::QAB1(E),XP(d)
- Refutation
- S(e);
- Try
- R(J);
- Vars
- R(a);N_GUARD,XP(C)::QAR(E),XP(g)
- R(a);N_GUARD::R(B)+P(F),XS(e)
- R(a);N_GUARD::QAR(E),XP(g)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(e);N_GUARD::QAB1(E),XP(d)
- S(e);N_GUARD::QAB(E)
- Refutation
- R(a);XR(B)
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- S(e);N_GUARD::QAB1(E),XP(d)
- S(c);N_GUARD::S(A)
- Refutation
- R(a);XQ(E)
- Try
- Q(E);XB(b)
- Threat
- S(A)
- Vars
- S(e);OGATE::QAR1(E),XP(h)
- Refutation
- R(a);XR(B)
- Try
- Actual
- B(D);
- Vars
- R(a);N_GUARD,XR(B)::QAR(E),XP(g)
- R(a);N_GUARD,XP(C)::QAR(E),XP(g)
- R(a);N_GUARD::R(B)+P(F),XS(e)
- R(a);N_GUARD::QAR(E),XP(g)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(e);N_GUARD::QAB1(E),XP(d)
- S(e);N_GUARD::QAB(E)
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).