MESON Chess Problem Database
Problem Display
PID: 260992 (7Q/3R4/NPpPp1N1/pPPk1nK1/prnp1P2/B2P1p2/8/8 w - - 0 1)
Issler, Werner
Neue Zurcher Zeitung, 1970
#2
12 + 10
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Rxb5
- 2.Sc7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sxa3
- 2.Qe5#
- 1...Sce3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sxb6
- 2.Qe5#
- 1...Scxd6
- 2.Qe5#
- 1...Sfe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sfxd6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...f2
- 2.Qh1#
- 1...cxb5
- 2.Qa8#
- 1...e5
- 2.Qg8#
- 1...Rb1
- Tries
- 1.Bxb4?
- threat
- 2.Sc7#
- 1...cxb5
- 2.Qa8#
- 1...axb4!
- threat
- 1.Rb7?
- 1...Rxb5
- 2.Sc7#
- 1...Sxa3
- 2.Qe5#
- 1...Sxb6
- 2.Qe5#
- 1...Scxd6
- 2.Qe5#
- 1...Sfxd6
- 2.Se7#
- 1...e5
- 2.Qg8#
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sce3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sfe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...f2
- 2.Qh1#
- 1...cxb5!
- 1...Rxb5
- 1.Rf7?
- 1...Rxb5
- 2.Sc7#
- 1...Sxa3
- 2.Qe5#
- 1...Sxb6
- 2.Qe5#
- 1...Scxd6
- 2.Qe5#
- 1...Sfxd6
- 2.Se7#
- 1...cxb5
- 2.Qa8#
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sce3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sfe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...f2
- 2.Qh1#
- 1...e5!
- 1...Rxb5
- 1.Rh7?
- 1...Rxb5
- 2.Sc7#
- 1...Sxa3
- 2.Qe5#
- 1...Sxb6
- 2.Qe5#
- 1...Scxd6
- 2.Qe5#
- 1...Sfxd6
- 2.Se7#
- 1...cxb5
- 2.Qa8#
- 1...e5
- 2.Qg8#
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sce3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sfe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...f2!
- 1...Rxb5
- 1.Rd8?
- 1...Rxb5
- 2.Sc7#
- 1...Sxa3
- 2.Qe5#
- 1...Sxb6
- 2.Qe5#
- 1...Scxd6
- 2.Qe5#
- 1...Sfxd6
- 2.Se7#
- 1...e5
- 2.Qg8#
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sce3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sfe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...f2
- 2.Qh1#
- 1...cxb5!
- 1...Rxb5
- 1.Qxd4+?
- 1...Sxd4
- 2.Se7#
- 1...Kxd4!
- 1...Sxd4
- 1.Qa8?
- threat
- 2.Qxc6#
- 1...Rxb5
- 2.Sc7#
- 1...e5
- 2.Qg8#
- 1...Se7
- 2.Sxe7#
- 1...Se5!
- threat
- 1.Qc8?
- threat
- 2.Qxc6#
- 1...Rxb5
- 2.Sc7#
- 1...cxb5
- 2.Qb7#
- 2.Qa8#
- 1...e5
- 2.Qg8#
- 1...Se7
- 2.Sxe7#
- 1...Se5!
- threat
- 1.b7?
- 1...Rxb5
- 2.Sc7#
- 1...Sxa3
- 2.Qe5#
- 1...Scxd6
- 2.Qe5#
- 1...Sfxd6
- 2.Se7#
- 1...e5
- 2.Qg8#
- 1...f2
- 2.Qh1#
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sce3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sfe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...cxb5!
- 1...Rxb5
- 1.Bxb4?
- Keys
- 1.Ra7!
- 1...Rxb5
- 2.Sc7#
- 1...Sxa3
- 2.Qe5#
- 1...Sxb6
- 2.Qe5#
- 1...Scxd6
- 2.Qe5#
- 1...Sfxd6
- 2.Se7#
- 1...cxb5
- 2.Qa8#
- 1...e5
- 2.Qg8#
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sce3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sfe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...f2
- 2.Qh1#
- 1...Rxb5
- 1.Ra7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);::S(G)
- R(c);XP(D)::S(G)
- S(d);N_GUARD::QAR1(L)
- S(d);N_GUARD,XB(A)::QAR1(L)
- S(d);N_GUARD::QAR1(L),XS(d)
- S(d);N_GUARD,XP(H)::QAR1(L)
- S(d);N_GUARD,P_SPINS(d),XP(I)::QAR1(L)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD,P_SPINS(h),XP(I)::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(a);OGATEB::QAB(L)
- P(i);OGATEB,XP(D)::QAB(L)
- P(j);OGATEB::QAB(L)
- Tries
- Try
- B(A);XR(c)
- Threat
- S(G)
- Vars
- P(i);OGATEB,XP(D)::QAB(L)
- Refutation
- P(f);XB(A)
- Try
- R(K);
- Vars
- R(c);XP(D)::S(G)
- S(d);N_GUARD,XB(A)::QAR1(L)
- S(d);N_GUARD,XP(H)::QAR1(L)
- S(d);N_GUARD,XP(I)::QAR1(L)
- S(h);N_GUARD,XP(I)::S(J)
- P(j);OGATEB::QAB(L)
- R(c);::S(G)
- S(d);N_GUARD::QAR1(L)
- S(d);N_GUARD::QAR1(L),XS(d)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(a);OGATEB::QAB(L)
- Refutation
- P(i);XP(D)
- Try
- R(K);
- Vars
- R(c);XP(D)::S(G)
- S(d);N_GUARD,XB(A)::QAR1(L)
- S(d);N_GUARD,XP(H)::QAR1(L)
- S(d);N_GUARD,XP(I)::QAR1(L)
- S(h);N_GUARD,XP(I)::S(J)
- P(i);OGATEB,XP(D)::QAB(L)
- R(c);::S(G)
- S(d);N_GUARD::QAR1(L)
- S(d);N_GUARD::QAR1(L),XS(d)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(a);OGATEB::QAB(L)
- Refutation
- P(j);
- Try
- R(K);
- Vars
- R(c);XP(D)::S(G)
- S(d);N_GUARD,XB(A)::QAR1(L)
- S(d);N_GUARD,XP(H)::QAR1(L)
- S(d);N_GUARD,XP(I)::QAR1(L)
- S(h);N_GUARD,XP(I)::S(J)
- P(i);OGATEB,XP(D)::QAB(L)
- P(j);OGATEB::QAB(L)
- R(c);::S(G)
- S(d);N_GUARD::QAR1(L)
- S(d);N_GUARD::QAR1(L),XS(d)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- Refutation
- P(a);
- Try
- R(K);
- Vars
- R(c);XP(D)::S(G)
- S(d);N_GUARD,XB(A)::QAR1(L)
- S(d);N_GUARD,XP(H)::QAR1(L)
- S(d);N_GUARD,P_SPINS(d),XP(I)::QAR1(L)
- S(h);N_GUARD,P_SPINS(h),XP(I)::S(J)
- P(j);OGATEB::QAB(L)
- R(c);::S(G)
- S(d);N_GUARD::QAR1(L)
- S(d);N_GUARD::QAR1(L),XS(d)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(a);OGATEB::QAB(L)
- Refutation
- P(i);XP(D)
- Try
- Q(L);CHECK,XP(e)
- Vars
- S(h);SBLOCK,XQ(L)::S(J)
- Refutation
- K(g);P-FLIGHT,XQ(L)
- Try
- Q(L);P_PINP(i)
- Threat
- QAB1(L),XP(i)
- Vars
- R(c);XP(D)::S(G)
- P(j);OGATEB::QAB(L)
- S(h);N_GUARD::S(J),XS(h)
- Refutation
- S(d);
- Try
- Q(L);
- Threat
- QAB1(L),XP(i)
- Vars
- R(c);XP(D)::S(G)
- P(j);OGATEB::QAB(L)
- S(h);N_GUARD::S(J),XS(h)
- Refutation
- S(d);
- Try
- P(H);
- Vars
- R(c);XP(D)::S(G)
- S(d);N_GUARD,XB(A)::QAR1(L)
- S(d);N_GUARD,P_SPINS(d),XP(I)::QAR1(L)
- S(h);N_GUARD,P_SPINS(h),XP(I)::S(J)
- P(j);OGATEB::QAB(L)
- P(a);OGATEB::QAB(L)
- R(c);::S(G)
- S(d);N_GUARD::QAR1(L)
- S(d);N_GUARD::QAR1(L),XS(d)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- Refutation
- P(i);XP(D)
- Try
- Actual
- R(K);
- Vars
- R(c);XP(D)::S(G)
- S(d);N_GUARD,XB(A)::QAR1(L)
- S(d);N_GUARD,XP(H)::QAR1(L)
- S(d);N_GUARD,XP(I)::QAR1(L)
- S(h);N_GUARD,XP(I)::S(J)
- P(i);OGATEB,XP(D)::QAB(L)
- P(j);OGATEB::QAB(L)
- R(c);::S(G)
- S(d);N_GUARD::QAR1(L)
- S(d);N_GUARD::QAR1(L),XS(d)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(a);OGATEB::QAB(L)
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).