MESON Chess Problem Database
Problem Display
PID: 242635 (2q5/8/8/2P2B1p/1rpQ1p1K/B1NRprp1/n1kPN3/1R4b1 w - - 0 1)
Gockel, Hubert
Schach, 1981
#2
10 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Rxe3#
- 1...Qc7
- 2.Rxe3#
- 1...Qb8
- 2.Rxe3#
- 1...Qg8
- 2.Rxe3#
- 1...Qh8
- 2.Rxe3#
- 1...Rb2
- 2.Rxb2#
- 1...Ra4
- 2.Rb2#
- 1...Sxc3
- 2.Rxc3#
- 1...exd2
- 2.Rxd2#
- 1...cxd3
- 2.Qxd3#
- 1...Qa6
- Tries
- 1.Qxc4?
- threat
- 2.Sd4#
- 2.Rd7#
- 1...Qd8+
- 2.Rxd8#
- 1...Qxf5
- 2.Sd4#
- 1...Qxc5
- 2.Rd5#
- 1...Rxc4
- 2.Rb2#
- 1...Sxc3
- 2.Rc1#
- 2.Rd7#
- 1...Qe6
- 2.Sd4#
- 1...Qb7
- 2.Sd4#
- 2.Rd5#
- 1...Qd7
- 2.Rxd7#
- 1...Qc6
- 2.Sd4#
- 2.Rd5#
- 1...Qa8
- 2.Sd4#
- 2.Rd5#
- 1...Qe8
- 2.Sd4#
- 1...Qf8
- 2.Sd4#
- 1...Qh8
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sc1
- 2.Sd4#
- 2.Rxc1#
- 1...exd2!
- threat
- 1.Qe4?
- threat
- 2.Sd4#
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qd8+
- 2.Rxd8#
- 1...Qxf5
- 2.Sd4#
- 1...Qxc5
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Rxb1
- 2.Sd4#
- 1...exd2
- 2.Re3#
- 2.Rxf3#
- 1...cxd3
- 2.Qxd3#
- 1...Rb2
- 2.Sd4#
- 2.Rxb2#
- 1...Qe6
- 2.Sd4#
- 1...Qb7
- 2.Sd4#
- 2.Rd5#
- 1...Qd7
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rxd7#
- 1...Qc6
- 2.Sd4#
- 2.Rd5#
- 1...Qa8
- 2.Sd4#
- 2.Rd5#
- 1...Qe8
- 2.Sd4#
- 1...Qh8
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sc1
- 2.Sd4#
- 1...Sxc3!
- threat
- 1.Qd7?
- threat
- 2.Sd4#
- 2.Rxe3#
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 1...Qxd7
- 2.Rxd7#
- 1...Qxc5
- 2.Rd5#
- 1...Rxb1
- 2.Sd4#
- 1...Sxc3
- 2.Rxc3#
- 1...exd2
- 2.Rxd2#
- 2.Re3#
- 2.Rxf3#
- 1...cxd3
- 2.Qxd3#
- 1...Rb2
- 2.Sd4#
- 2.Rxb2#
- 1...Qb7
- 2.Sd4#
- 2.Rd5#
- 1...Qc6
- 2.Sd4#
- 2.Rd5#
- 1...Qa8
- 2.Sd4#
- 2.Rd5#
- 1...Qe8
- 2.Sd4#
- 1...Qf8
- 2.Sd4#
- 1...Qh8
- 2.Rxe3#
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 1...Sc1
- 2.Sd4#
- 1...Qd8+!
- threat
- 1.Qd8?
- threat
- 2.Sd4#
- 2.Rd7#
- 1...Qxd8+
- 2.Rxd8#
- 1...Qxc5
- 2.Rd5#
- 1...Rxb1
- 2.Sd4#
- 1...Sxc3
- 2.Rxc3#
- 1...exd2
- 2.Rxd2#
- 1...cxd3
- 2.Qxd3#
- 1...Rb2
- 2.Sd4#
- 2.Rxb2#
- 1...Qe6
- 2.Sd4#
- 1...Qb7
- 2.Sd4#
- 2.Rd5#
- 1...Qd7
- 2.Rxd7#
- 1...Qc6
- 2.Sd4#
- 2.Rd5#
- 1...Qa8
- 2.Sd4#
- 2.Rd5#
- 1...Sc1
- 2.Sd4#
- 1...Qxf5!
- threat
- 1.Qxc4?
- Keys
- 1.Qxe3!
- threat
- 2.Sd4#
- 2.Rd7#
- 1...Qd8+
- 2.Rxd8#
- 1...Qxf5
- 2.Sd4#
- 1...Qxc5
- 2.Rd5#
- 1...Rxe3
- 2.Sd4#
- 1...Rxb1
- 2.Sd4#
- 1...Bxe3
- 2.Rd7#
- 1...Sxc3
- 2.Rxc3#
- 1...cxd3
- 2.Bxd3#
- 1...fxe3
- 2.Sd4#
- 1...Rb2
- 2.Sd4#
- 2.Rxb2#
- 1...Qe6
- 2.Sd4#
- 1...Qb7
- 2.Sd4#
- 2.Rd5#
- 1...Qd7
- 2.Rxd7#
- 1...Qc6
- 2.Sd4#
- 2.Rd5#
- 1...Qa8
- 2.Sd4#
- 2.Rd5#
- 1...Qe8
- 2.Sd4#
- 1...Qf8
- 2.Sd4#
- 1...Qh8
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sc1
- 2.Sd4#
- threat
- 1.Qxe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 12
- REMOVED MATES = 8
- Sets
- Q(k);N_GUARD::B(J)+R(F),XP(d)
- R(g);N_GUARD::R1(A),XR(g)
- R(g);N_GUARD::R1(A)
- S(b);OGATE,XS(E)::B(J)+R(F),DCHECK,XS(b)
- P(d);OGATE,XP(B)::B(J)+R(F),DCHECK,XP(d)
- P(h);OGATE,P_SPINP(h),XR(F)::QAB1(G),XP(h)
- Tries
- Try
- Q(G);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(k);CHECK,N_GUARD::B(J)+R(F),XQ(k)
- Q(k);XB(J)::S(C)
- Q(k);N_GUARD,XP(I)::B(J)+R(F)
- R(g);N_GUARD,XQ(G)::R1(A)
- Q(k);::S(C)
- Q(k);::B(J)+R(F),XQ(k)
- Refutation
- P(d);XP(B)
- Try
- Q(G);
- Threat
- DUALS(6)
- Vars
- Q(k);CHECK::QAB(G)+R(F),XQ(k)
- Q(k);XB(J)::S(C)
- R(g);XR(A)::S(C)
- P(h);OGATE,P_SPINP(h),XR(F)::QAB1(G),XP(h)
- Q(k);::S(C)
- S(b);::S(C)
- Refutation
- S(b);XS(E)
- Try
- Q(G);
- Threat
- DUALS(5)
- Vars
- Q(k);OGATE,XQ(G)::B(J)+R(F),XQ(k)
- Q(k);XP(I)::B(J)+R(F)
- R(g);XR(A)::S(C)
- S(b);OGATE,XS(E)::B(J)+R(F),DCHECK,XS(b)
- P(h);OGATE,P_SPINP(h),XR(F)::QAB1(G),XP(h)
- Q(k);::S(C)
- S(b);::S(C)
- Refutation
- Q(k);CHECK
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- Q(k);CHECK,OGATE,XQ(G)::B(J)+R(F),XQ(k)
- Q(k);N_GUARD,XP(I)::B(J)+R(F)
- R(g);XR(A)::S(C)
- S(b);OGATE,XS(E)::B(J)+R(F),DCHECK,XS(b)
- P(d);OGATE,XP(B)::B(J)+R(F),DCHECK,XP(d)
- P(h);OGATE,P_SPINP(h),XR(F)::QAB1(G),XP(h)
- Q(k);::S(C)
- Q(k);::B(J)+R(F),XQ(k)
- S(b);::S(C)
- Refutation
- Q(k);XB(J)
- Try
- Actual
- Q(G);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(k);CHECK,N_GUARD::B(J)+R(F),XQ(k)
- Q(k);XB(J)::S(C)
- Q(k);N_GUARD,XP(I)::B(J)+R(F)
- R(e);XQ(G)::S(C)
- R(g);XR(A)::S(C)
- B(a);XQ(G)::B(J)+R(F)
- S(b);OGATE,XS(E)::B(J)+R(F),DCHECK,XS(b)
- P(h);OGATE,P_SPINP(h),XR(F)::B(J),XP(h)
- P(i);XQ(G)::S(C)
- Q(k);::S(C)
- Q(k);::B(J)+R(F),XQ(k)
- S(b);::S(C)
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).