MESON Chess Problem Database
Problem Display
PID: 52089 (6K1/2PQN3/2P1PP1R/4kpR1/5n2/2P1p1P1/B1n1P3/8 w - - 0 1)
Hoffmann, Martin Wolfgang
Schweizerische Schachzeitung, 1989
#2
13 + 5
| 3335 | Cyclone | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sxe2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd3
- 2.Qd5#
- 1...Sh3
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Sxe6
- 2.Qxe6#
- 2.Qd5#
- 1...Sa1
- Tries
- 1.Kf7?
- 1...Sxe2
- 2.Qd5#
- 1...Sxe6
- 2.Qxe6#
- 2.Qd5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sg2
- 2.Qd5#
- 1...Sd3
- 2.Qd5#
- 1...Sh3
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Ke4!
- 1...Sxe2
- 1.Sxf5?
- threat
- 2.Sd6#
- 1...Ke4
- 2.Sd6#
- 1...Sxe6
- 2.Qxe6#
- 2.Qd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sh3
- 2.Qd5#
- 1...Sg6!
- threat
- 1.Bb1?
- 1...Ke4
- 2.Qd4#
- 1...Sxe2
- 2.Qd5#
- 1...Sxe6
- 2.Qd5#
- 1...Sa1
- 2.Rxf5#
- 1...Se1
- 2.Rxf5#
- 1...Sa3
- 2.Rxf5#
- 1...Sb4
- 2.Rxf5#
- 1...Sd4
- 2.cxd4#
- 1...Sg2
- 2.Qd5#
- 1...Sd3
- 2.Qd5#
- 1...Sh3
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Sg6!
- 1...Ke4
- 1.Bd5?
- threat
- 2.Rxf5#
- 1...Sxd5
- 2.Qxd5#
- 1...Sd4!
- threat
- 1.Qd3?
- threat
- 2.Rxf5#
- 1...Sd4
- 2.Qxd4#
- 1...Sd5
- 2.Qxd5#
- 1...Sxd3!
- threat
- 1.Qd6+?
- 1...Ke4
- 2.Qxf4#
- 1...Kxd6!
- 1...Ke4
- 1.Kf7?
- Keys
- 1.Rh4!
- 1...Ke4
- 2.Qd5#
- 1...Kxf6
- 2.Rxf5#
- 1...Sxe2
- 2.Rxf5#
- 1...Sxe6
- 2.Rxf5#
- 2.Qxe6#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sg2
- 2.Rxf5#
- 1...Sd3
- 2.Rxf5#
- 1...Sh3
- 2.Rxf5#
- 1...Sd5
- 2.Rxf5#
- 1...Sh5
- 2.Rxf5#
- 1...Sg6
- 2.Rxf5#
- 1...Ke4
- 1.Rh4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB1(K)
- S(a);N_GUARD::QAB1(K),XS(a)
- S(c);N_GUARD,XP(B)::QAR1(K)
- S(c);N_GUARD::QAR1(K)
- S(c);N_GUARD::QAR1(K),XS(c)
- Tries
- Try
- K(M);S_FLIGHT
- Vars
- S(c);N_GUARD,XP(B)::QAR1(K)
- S(a);N_GUARD::QAB1(K)
- S(a);N_GUARD::QAB1(K),XS(a)
- S(c);N_GUARD::QAR1(K)
- S(c);N_GUARD::QAR1(K),XS(c)
- Refutation
- K(d);N_SPINP(e),P-FLIGHT
- Try
- S(L);XP(e)
- Threat
- R(E)+S(L)
- Vars
- K(d);P-FLIGHT::S(L)
- S(a);N_GUARD::QAB1(K),XS(a)
- S(c);N_GUARD::QAR1(K)
- Refutation
- S(c);
- Try
- B(A);
- Vars
- K(d);N_SPINP(e),P-FLIGHT,P_SPINS(a)::QAR1(K)
- S(c);N_GUARD,XP(B)::QAR1(K)
- S(c);N_GUARD,XP(G)::QAR1(K)
- S(a);::R1(E),XP(e)
- S(a);OGATE::P(C),XS(a)
- S(c);N_GUARD::QAR1(K)
- S(c);N_GUARD::QAR1(K),XS(c)
- Refutation
- S(c);
- Try
- B(A);
- Threat
- R1(E),XP(e)
- Vars
- S(c);OGATE,XB(A)::QAR1(K),XS(c)
- Refutation
- S(a);
- Try
- Q(K);
- Threat
- R1(E),XP(e)
- Vars
- S(a);N_GUARD::QAB1(K),XS(a)
- S(c);N_GUARD::QAR1(K),XS(c)
- Refutation
- S(c);XQ(K)
- Try
- Q(K);CHECK
- Vars
- K(d);N_SPINP(e),OGATE,P-FLIGHT::QAR1(K),XS(c)
- Refutation
- K(d);N_SPINP(e),S_FLIGHT,XQ(K)
- Try
- Actual
- R(I);
- Vars
- K(d);N_SPINP(e),P-FLIGHT,P_SPINS(c)::QAB1(K)
- K(d);N_SPINP(e),S_FLIGHT,XP(H)::R1(E),XP(e)
- S(c);XP(B)::R1(E),XP(e)
- S(a);N_GUARD::QAB1(K)
- S(a);N_GUARD::QAB1(K),XS(a)
- S(c);::R1(E),XP(e)
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).