MESON Chess Problem Database
Problem Display
PID: 215701 (n4n2/1Kp2b2/pN2B3/2k4r/P2R1Q2/qR4p1/1Pr1Pb1B/N7 w - - 0 1)
Meyer, Heinrich Friedrich Ludwig
Sp. HM., Baltimore American and Commercial Advertiser, 1882
#2
11 + 11
| 4817 | English Mechanic and World of Science | 1882 |
| 6490 | yacpdb | 2020 |
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxb3
- 2.Sxb3#
- 1...Qxa4
- 2.Sxa4#
- 1...Rxb2
- 2.Rc4#
- 1...Rd2
- 2.Rc4#
- 1...Rxe2
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Rxh2
- 2.Rd5#
- 2.Qe5#
- 1...Rh3
- 2.Rd5#
- 2.Qe5#
- 1...Rh4
- 2.Rd5#
- 2.Qe5#
- 1...Rd5
- 2.Rxd5#
- 1...Re5
- 2.Qxe5#
- 1...Rh6
- 2.Rd5#
- 2.Qe5#
- 1...Rh7
- 2.Rd5#
- 2.Qe5#
- 1...Rh8
- 2.Rd5#
- 2.Qe5#
- 1...Sxe6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...a5
- 2.Rb5#
- 1...cxb6
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...Qxb3
- Tries
- 1.Rxa3?
- threat
- 2.Sb3#
- 2.b4#
- 1...Rxb2
- 2.Rc3#
- 2.Rc4#
- 1...Bxe6
- 2.b4#
- 1...Rc4
- 2.Rxc4#
- 1...Rc3
- 2.Rxc3#
- 2.b4#
- 1...Be1
- 2.Sb3#
- 1...a5
- 2.Sb3#
- 1...Bxd4!
- threat
- 1.Qf5+?
- 1...Kxd4
- 2.Sxc2#
- 1...Rxf5!
- 1...Kxd4
- 1.Rxa3?
- Keys
- 1.Rdd3!
- 1...Qxb2
- 2.Qb4#
- 1...Qxa1
- 2.Qb4#
- 1...Qxb3
- 2.Sxb3#
- 1...Qxa4
- 2.Sxa4#
- 1...Rxb2
- 2.Rdc3#
- 2.Qc4#
- 1...Rxe2
- 2.Rdc3#
- 2.Qc4#
- 1...Rxh2
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Bxe6
- 2.Qxf8#
- 1...Sxb6
- 2.Qxc7#
- 1...Sxe6
- 2.Sd7#
- 1...gxh2
- 2.Qxf2#
- 1...cxb6
- 2.Qd6#
- 1...Qb4
- 2.Qxb4#
- 1...Qa2
- 2.Qb4#
- 1...Rc1
- 2.Qxc1#
- 1...Rd2
- 2.Rdc3#
- 2.Qc4#
- 1...Rc3
- 2.Rdxc3#
- 1...Rc4
- 2.Qxc4#
- 1...Rh3
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rh4
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rd5
- 2.Rxd5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Qxg5#
- 1...Rh6
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rh7
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rh8
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Be1
- 2.Qe3#
- 2.Qd4#
- 1...Bg1
- 2.Bxg1#
- 1...Be3
- 2.Qxe3#
- 1...Bd4
- 2.Qxd4#
- 1...Bg6
- 2.Qxf8#
- 1...Be8
- 2.Qxf8#
- 1...Bg8
- 2.Qxf8#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...g2
- 2.Qxf2#
- 1...a5
- 2.Rb5#
- 1...c6
- 2.Qd6#
- 1...Qxb2
- 1.Rdd3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 18
- REMOVED MATES = 3
- Sets
- Q(c);P_PINS(I),XR(E)::S(A),XQ(c)
- Q(c);XP(F)::S(I),XQ(c)
- R(a);N_GUARD,XP(B)::R1(G)
- R(a);N_GUARD::R1(G)
- R(a);N_GUARD,XP(C)::R1(G)
- R(a);N_GUARD::R1(G),XR(a)
- R(f);N_GUARD::R1(G),XR(f)
- R(f);N_GUARD::QAR2(H),XR(f)
- S(k);N_GUARD,XB(J)::S(I)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- P(g);N_GUARD::R1(E)
- P(h);N_GUARD,XS(I)::QAB1(H)
- P(h);N_GUARD::QAB1(H)
- Tries
- Try
- R(E);XQ(c)
- Threat
- DUALS(2)
- Vars
- B(i);XB(J)::P(B)
- R(a);N_GUARD::R1(G),XR(a)
- B(b);::S(A)
- P(g);::S(A)
- Refutation
- B(b);XR(G)
- Try
- Q(H);CHECK
- Vars
- K(e);S_FLIGHT,XR(G)::S(A),XR(a)
- Refutation
- R(f);XQ(H)
- Try
- Actual
- R(G);
- Vars
- Q(c);N_GUARD,XP(B)::QAB1(H)
- Q(c);N_GUARD,XS(A)::QAB1(H)
- Q(c);P_PINS(I),XR(E)::S(A),XQ(c)
- Q(c);XP(F)::S(I),XQ(c)
- B(i);OGATE,XB(J)::QAB(H),XS(k)
- S(j);N_GUARD,XS(I)::QAR2(H),XP(h)
- S(k);N_GUARD,XB(J)::S(I)
- P(d);N_GUARD,XB(D)::QAB(H),XB(b)
- P(h);N_GUARD,XS(I)::QAB1(H)
- Q(c);N_GUARD,P_PINS(I)::QAB1(H),XQ(c)
- Q(c);N_GUARD::QAB1(H)
- R(a);OGATEB::QAR(H),XR(a)
- R(a);N_GUARD::R(G),XR(a)
- R(a);N_GUARD::QAR1(H),XR(a)
- R(f);N_GUARD::R1(G),XR(f)
- R(f);N_GUARD::QAR2(H),XR(f)
- R(f);N_GUARD::QAR(H),XR(f)
- B(b);OGATEB::B(D),XB(b)
- B(b);N_GUARD::QAB(H),XB(b)
- B(b);N_GUARD::QAB1(H),XB(b)
- B(i);OGATE::QAB(H),XS(k)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- P(d);N_GUARD::QAB(H),XB(b)
- P(g);N_GUARD::R1(E)
- P(h);N_GUARD::QAB1(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).