MESON Chess Problem Database
Problem Display
PID: 176339 (1b1R4/p1B5/1r1rP3/2q2QKn/N2k4/1B2N3/2P1RP2/5n2 w - - 0 1)
Schulz, Hermann
Schach-Echo, 1972
#2
11 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.c3#
- 1...Qxc2
- 2.Sxc2#
- 1...Qb5
- 2.c3#
- 1...Qd5
- 2.c3#
- 1...Qe5
- 2.c3#
- 1...Qxf5+
- 2.Sxf5#
- 1...Rd5
- 2.Qe5#
- 1...Sd2
- 2.Rxd2#
- 1...Sh2
- 2.Rd2#
- 1...Sxe3
- 2.Rd2#
- 2.fxe3#
- 1...Sfg3
- 2.Rd2#
- 1...Qa3
- Tries
- 1.Sc4?
- threat
- 2.Re4#
- 2.Qxc5#
- 2.c3#
- 1...Qxc4
- 2.Re4#
- 2.Qe4#
- 2.Qe5#
- 1...Qxc7
- 2.Re4#
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 2.c3#
- 1...Rxb3
- 2.Re4#
- 2.Qxc5#
- 1...Qe5
- 2.Qxe5#
- 1...Qa3
- 2.Re4#
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 2.c3#
- 1...Qb4
- 2.Re4#
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Qa5
- 2.Re4#
- 1...Qb5
- 2.Re4#
- 2.c3#
- 1...Qd5
- 2.c3#
- 1...Qc6
- 2.Qd3#
- 2.Qe5#
- 2.c3#
- 1...Rb5
- 2.Re4#
- 2.c3#
- 1...Rc6
- 2.Re4#
- 2.c3#
- 1...Rd5
- 2.Re4#
- 2.Qe5#
- 2.c3#
- 1...Sd2
- 2.Rxd2#
- 2.Qxc5#
- 2.c3#
- 1...Se3
- 2.Rd2#
- 2.c3#
- 2.fxe3#
- 1...Sfg3
- 2.Rd2#
- 2.Qxc5#
- 2.c3#
- 1...Shg3
- 2.Qxc5#
- 2.c3#
- 1...Sf6
- 2.Qxc5#
- 2.c3#
- 1...Qxf5+!
- threat
- 1.Sd5?
- threat
- 2.Re4#
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Qxd5
- 2.c3#
- 1...Rxb3
- 2.Re4#
- 2.Qe4#
- 1...Rxd5
- 2.Re4#
- 2.Qe5#
- 1...Rxe6
- 2.Qd3#
- 1...Qc3
- 2.Re4#
- 2.Qe4#
- 2.Qe5#
- 1...Qc4
- 2.Re4#
- 2.Qe4#
- 2.Qe5#
- 1...Qb5
- 2.Re4#
- 2.Qe4#
- 2.Qe5#
- 2.c3#
- 1...Sd2
- 2.Rxd2#
- 2.Qd3#
- 2.Qe5#
- 1...Se3
- 2.Rd2#
- 2.fxe3#
- 1...Sfg3
- 2.Rd2#
- 2.Qd3#
- 2.Qe5#
- 1...Shg3
- 2.Qd3#
- 2.Qe5#
- 2.Qf6#
- 1...Sf4
- 2.Re4#
- 2.Qe4#
- 2.Qxf4#
- 2.Qe5#
- 2.Qf6#
- 1...Sf6
- 2.Qd3#
- 2.Qe5#
- 2.Qxf6#
- 1...Qxc2!
- threat
- 1.Bxb6?
- threat
- 2.Bxc5#
- 2.c3#
- 1...Qxb6
- 2.c3#
- 1...axb6!
- threat
- 1.Rxd6+?
- 1...Qxd6
- 2.c3#
- 1...Qd5
- 2.Rxd5#
- 2.Qxd5#
- 2.c3#
- 1...Rxd6!
- 1...Qxd6
- 1.Qd5+?
- 1...Rxd5+
- 2.Sf5#
- 1...Qxd5+!
- 1...Rxd5+
- 1.Sc4?
- Keys
- 1.Bd5!
- threat
- 2.Qe4#
- 1...Qxc2
- 2.Sxc2#
- 1...Qxd5
- 2.c3#
- 1...Rxd5
- 2.Qe5#
- 1...Rxe6
- 2.Qd3#
- 1...Sd2
- 2.Rxd2#
- 1...Sfg3
- 2.Rd2#
- 1...Shg3
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- threat
- 1.Bd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(c);N_GUARD,N_PINQ(G)::P(A)
- Q(c);N_PINQ(G),XP(A)::S(E),XQ(c)
- Q(c);N_GUARD::P(A)
- Q(c);N_GUARD,N_SPINR(f)::P(A)
- Q(c);CHECK,XQ(G)::S(E),XQ(c)
- R(f);S_CUTQ(c)::QAB1(G)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(c);N_GUARD::QAB1(G),XQ(c)
- Q(c);::R1(B)
- Q(c);N_SPINR(f)::P(A)
- Refutation
- Q(c);CHECK,XQ(G)
- Try
- S(E);N_PINR(f),N_SPINQ(G)
- Threat
- DUALS(4)
- Vars
- Q(c);N_GUARD,P_PINQ(G),XS(E)::P(A)
- R(f);XP(I)::QAR1(G)
- Refutation
- Q(c);XP(A)
- Try
- B(J);P_PINQ(c),XR(e)
- Threat
- DUALS(2)
- Vars
- Q(c);N_PINQ(G),N_SPINQ(c),XB(J)::P(A)
- Refutation
- P(g);N_SPINQ(c),XB(J)
- Try
- R(K);CHECK,XR(f)
- Vars
- Q(c);N_PINQ(G),XR(K)::P(A)
- Refutation
- R(e);XR(K)
- Try
- Q(G);CHECK,N_PINR(f)
- Vars
- R(f);CHECK,P_SPINR(f),XQ(G)::S(E)
- Refutation
- Q(c);CHECK,XQ(G)
- Try
- Actual
- B(D);N_PINR(f),N_SPINQ(G)
- Threat
- QAR1(G)
- Vars
- Q(c);XP(A)::S(E),XQ(c)
- Q(c);N_GUARD,P_PINQ(G),XB(D)::P(A)
- R(f);P_PINQ(G),P_SPINR(f),XB(D)::QAB1(G)
- R(f);XP(I)::QAR1(G)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- S(d);N_GUARD::QAB(G)
- S(d);N_GUARD::QAB(G),XS(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).