MESON Chess Problem Database
Problem Display
PID: 140034 (8/2p2PKp/r4R2/1nP1kpB1/1NQ1B2N/2p1p1p1/4nq2/3r4 w - - 0 1)
Axt, Hermann
3rd Prize, Main-Post, 1965
#2
9 + 12
| 23 | Die Schwalbe | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sf3#
- 2.Rxf5#
- 1...Qg1
- 2.Sf3#
- 2.Rxf5#
- 1...Qg2
- 2.Rxf5#
- 1...Qh2
- 2.Sf3#
- 2.Rxf5#
- 1...Qf3
- 2.Sxf3#
- 1...Rda1
- 2.Sd3#
- 2.Qd5#
- 1...Rb1
- 2.Sd3#
- 2.Qd5#
- 1...Rc1
- 2.Sd3#
- 2.Qd5#
- 1...Re1
- 2.Sd3#
- 2.Qd5#
- 1...Rf1
- 2.Sd3#
- 2.Qd5#
- 1...Rg1
- 2.Sd3#
- 2.Qd5#
- 1...Rh1
- 2.Sd3#
- 2.Qd5#
- 1...Rd3
- 2.Sxd3#
- 1...Rd5
- 2.Qxd5#
- 1...Raa1
- 2.Sc6#
- 2.Re6#
- 1...Ra2
- 2.Sc6#
- 2.Re6#
- 1...Ra3
- 2.Sc6#
- 2.Re6#
- 1...Ra4
- 2.Sc6#
- 2.Re6#
- 1...Ra5
- 2.Sc6#
- 2.Re6#
- 1...Rc6
- 2.Sxc6#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Sc6#
- 2.Re6#
- 1...Ra8
- 2.Sc6#
- 2.Re6#
- 1...Sed4
- 2.Qd5#
- 1...Sf4
- 2.Rxf5#
- 1...Sbd4
- 2.Qd5#
- 1...Sd6
- 2.Re6#
- 1...f4
- 2.Rf5#
- 1...c6
- 2.Re6#
- 1...h5
- 2.Sg6#
- 1...h6
- 2.Sg6#
- 1...Qe1
- Tries
- 1.Sxa6?
- threat
- 2.Re6#
- 1...Sed4
- 2.Qd5#
- 1...Sbd4
- 2.Qd5#
- 1...Rd5
- 2.Qxd5#
- 1...Sf4
- 2.Rxf5#
- 1...Rd6!
- threat
- 1.Bd3?
- threat
- 2.Qd5#
- 1...Rxd3
- 2.Sxd3#
- 1...Qg2
- 2.Rxf5#
- 1...Qf3
- 2.Sxf3#
- 1...Sf4
- 2.Rxf5#
- 1...c6
- 2.Re6#
- 1...Rd6!
- threat
- 1.Bc6?
- threat
- 2.Re6#
- 1...Rxc6
- 2.Sxc6#
- 1...Rd5
- 2.Qxd5#
- 1...Sed4
- 2.Qd5#
- 1...Sf4
- 2.Rxf5#
- 1...Sbd4
- 2.Qd5#
- 1...Rd6!
- threat
- 1.Rxa6?
- threat
- 2.Sc6#
- 2.Re6#
- 1...Rd4
- 2.Re6#
- 2.Qe6#
- 1...Sed4
- 2.Qd5#
- 1...Sbd4
- 2.Qd5#
- 1...Rd5
- 2.Qxd5#
- 1...Sf4
- 2.Sc6#
- 2.Bf6#
- 1...Sd6
- 2.Sc6#
- 1...Sa7
- 2.Re6#
- 1...c6
- 2.Sxc6#
- 1...Rd6!
- threat
- 1.Qe6+?
- 1...Kd4
- 2.Qd5#
- 1...Rxe6!
- 1...Kd4
- 1.Sxa6?
- Keys
- 1.Bf3!
- threat
- 2.Rxf5#
- 1...Qxf3
- 2.Sxf3#
- 1...Rxf6
- 2.Bxf6#
- 1...Rd5
- 2.Qxd5#
- 1...Sed4
- 2.Qd5#
- 1...Sbd4
- 2.Qd5#
- 1...Sd6
- 2.Re6#
- 1...f4
- 2.Rf5#
- 2.Qe4#
- threat
- 1.Bf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(c);N_GUARD::R1(G),XP(i)
- Q(c);N_GUARD::S(D),XQ(c)
- R(a);N_GUARD::S(A),XR(a)
- R(a);N_GUARD::QAR1(B),XR(a)
- R(j);N_GUARD::S(A),XR(j)
- R(j);N_GUARD::R1(G),XR(j)
- S(b);S_CUTR(a)::QAR1(B)
- S(b);S_CUTQ(c)::R1(G),XP(i)
- S(g);S_CUTR(a)::QAR1(B)
- S(g);S_CUTR(j)::R1(G)
- P(i);S_CUTQ(c)::R1(G)
- P(k);S_CUTR(j)::R1(G)
- P(l);N_GUARD::S(D)
- Tries
- Try
- S(A);XR(j)
- Threat
- R1(G)
- Vars
- S(b);S_CUTR(a)::QAR1(B)
- S(g);S_CUTR(a)::QAR1(B)
- R(a);N_GUARD::QAR1(B),XR(a)
- S(b);S_CUTQ(c)::R1(G),XP(i)
- Refutation
- R(a);
- Try
- B(C);
- Threat
- QAR1(B)
- Vars
- R(a);XB(C)::S(A),XR(a)
- Q(c);N_GUARD::R1(G),XP(i)
- Q(c);N_GUARD::S(D),XQ(c)
- S(b);S_CUTQ(c)::R1(G),XP(i)
- P(k);S_CUTR(j)::R1(G)
- Refutation
- R(j);
- Try
- B(C);
- Threat
- R1(G)
- Vars
- R(j);XB(C)::S(A),XR(j)
- R(a);N_GUARD::QAR1(B),XR(a)
- S(b);S_CUTR(a)::QAR1(B)
- S(b);S_CUTQ(c)::R1(G),XP(i)
- S(g);S_CUTR(a)::QAR1(B)
- Refutation
- R(a);
- Try
- R(G);XR(j)
- Threat
- DUALS(2)
- Vars
- S(b);S_CUTR(a)::QAR1(B)
- S(g);S_CUTR(a)::QAR1(B)
- R(a);N_GUARD::QAR1(B),XR(a)
- S(g);::S(A)
- S(g);::R1(G)
- P(k);::S(A),XP(k)
- Refutation
- R(a);
- Try
- Q(B);CHECK
- Vars
- K(h);S_FLIGHT::QAR1(B)
- Refutation
- R(j);XQ(B)
- Try
- Actual
- B(C);
- Threat
- R1(G),XP(i)
- Vars
- Q(c);XB(C)::S(D),XQ(c)
- R(j);OGATE,XR(G)::B(F),XR(j)
- R(a);N_GUARD::QAR1(B),XR(a)
- S(b);S_CUTR(a)::QAR1(B)
- S(g);S_CUTR(a)::QAR1(B)
- S(g);S_CUTR(j)::R1(G)
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).