MESON Chess Problem Database
Problem Display
PID: 214718 (1r6/q1N1n3/8/1pR2p1P/1pP5/1BkPP1N1/2P1p3/b1B1Kb1Q w - - 0 1)
Martindale, Frank W
Detroit Free Press, 1877
#2
12 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.cxb5#
- 1...Qa3
- 2.cxb5#
- 1...Qa4
- 2.cxb5#
- 1...Qa5
- 2.cxb5#
- 1...Qa6
- 2.cxb5#
- 1...Qb7
- 2.cxb5#
- 1...Qa8
- 2.cxb5#
- 1...Rb6
- 2.cxb5#
- 1...Ra8
- 2.Sxb5#
- 1...Rc8
- 2.Sxb5#
- 1...Rd8
- 2.Sxb5#
- 1...Re8
- 2.Sxb5#
- 1...Rf8
- 2.Sxb5#
- 1...Rg8
- 2.Sxb5#
- 1...Rh8
- 2.Sxb5#
- 1...Bb2
- 2.Bd2#
- 1...Bg2
- 2.Sxe2#
- 1...Bh3
- 2.Sxe2#
- 1...Sd5
- 2.Sxd5#
- 1...Sc6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...Sg8
- 2.Sd5#
- 1...bxc4
- 2.Rxc4#
- 1...f4
- 2.Se4#
- 1...Qa2
- Tries
- 1.Qe4?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Qxc7
- 2.Qd4#
- 1...fxe4
- 2.Sxe4#
- 1...Rd8
- 2.Sxb5#
- 1...Sc6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 2.Qd4#
- 1...Qxc5!
- threat
- 1.Qh4?
- threat
- 2.Qf6#
- 2.Qd4#
- 1...Qxc7
- 2.Qd4#
- 1...Qb6
- 2.Qd4#
- 1...Qa6
- 2.Qd4#
- 2.cxb5#
- 1...Rb6
- 2.Qd4#
- 2.cxb5#
- 1...Rd8
- 2.Sxb5#
- 1...Rf8
- 2.Sxb5#
- 2.Qd4#
- 1...Sd5
- 2.Sxd5#
- 2.Qd4#
- 1...Sc6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 2.Qd4#
- 1...Sg8
- 2.Sd5#
- 2.Qd4#
- 1...f4
- 2.Se4#
- 2.Qf6#
- 1...Qxc5!
- threat
- 1.Qe4?
- Keys
- 1.Qa8!
- 1...Qxc5
- 2.Qxa1#
- 1...Qxc7
- 2.Qxa1#
- 1...Qxa8
- 2.cxb5#
- 1...Rxa8
- 2.Sxb5#
- 1...bxc4
- 2.Rxc4#
- 1...Qb6
- 2.Qxa1#
- 1...Qa2
- 2.cxb5#
- 1...Qa3
- 2.cxb5#
- 1...Qa4
- 2.cxb5#
- 1...Qa5
- 2.cxb5#
- 1...Qa6
- 2.cxb5#
- 1...Qb7
- 2.Qxa1#
- 2.cxb5#
- 1...Rb6
- 2.cxb5#
- 1...Rb7
- 2.Qh8#
- 1...Rc8
- 2.Sxb5#
- 1...Rd8
- 2.Sxb5#
- 1...Re8
- 2.Sxb5#
- 1...Rf8
- 2.Sxb5#
- 1...Rg8
- 2.Sxb5#
- 1...Rh8
- 2.Sxb5#
- 2.Qxh8#
- 1...Bb2
- 2.Bd2#
- 1...Bg2
- 2.Sxe2#
- 1...Bh3
- 2.Sxe2#
- 1...Sd5
- 2.Sxd5#
- 1...Sc6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...Sg8
- 2.Sd5#
- 1...f4
- 2.Se4#
- 1...Qxc5
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(h);N_GUARD::R(J)+P(I),XP(f)
- R(j);S_CUTQ(h)::R(J)+P(I),XP(f)
- R(j);N_GUARD::S(L),XP(f)
- B(a);SBLOCK::B(A)
- B(b);N_GUARD::S(H),XP(c)
- S(i);N_GUARD::S(L),XS(i)
- S(i);N_GUARD::S(L)
- P(f);OGATE,P_SPINP(f),XP(I)::R1(J),XP(f)
- P(g);N_GUARD::S(H)
- Tries
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(h);XS(L)::QAB1(C)
- P(g);XQ(C)::S(H),XP(g)
- R(j);N_GUARD::S(L),XP(f)
- S(i);N_GUARD::S(L)
- Refutation
- Q(h);XR(J)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(h);XS(L)::QAB1(C)
- Q(h);::QAB1(C)
- R(j);N_GUARD::S(L),XP(f)
- S(i);N_GUARD::S(L)
- Refutation
- Q(h);XR(J)
- Try
- Actual
- Q(C);
- Vars
- Q(h);OGATE,XR(J)::QAB(C),XB(a)
- Q(h);OGATE,XS(L)::QAB(C),XB(a)
- Q(h);N_GUARD,XQ(C)::R(J)+P(I),XP(f)
- R(j);N_GUARD,XQ(C)::S(L),XP(f)
- P(f);OGATE,P_SPINP(f),XP(I)::R1(J),XP(f)
- Q(h);OGATE::QAB(C),XB(a)
- Q(h);N_GUARD::R(J)+P(I),XP(f)
- R(j);S_CUTQ(h)::R(J)+P(I),XP(f)
- R(j);OGATE::QAB(C)
- R(j);N_GUARD::S(L),XP(f)
- B(a);SBLOCK::B(A)
- B(b);N_GUARD::S(H),XP(c)
- S(i);N_GUARD::S(L),XS(i)
- S(i);N_GUARD::S(L)
- P(g);N_GUARD::S(H)
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).