MESON Chess Problem Database
Problem Display
PID: 186020 (8/2p1p2p/2P3p1/1pP1k1B1/1Pp3QN/2np2p1/2PR2B1/K7 w - - 0 1)
Kish, Alexander
The Observer, 1932
(First published on Sun May 29 1932)
#2
10 + 10
| 15239 | Valois Notebooks | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sd5
- 2.Sf3#
- 2.Qe4#
- 1...dxc2
- 2.Sf3#
- 1...e6
- 2.Qf4#
- 1...h5
- 2.Sxg6#
- 1...h6
- 2.Sxg6#
- 1...Sb1
- Tries
- 1.Bh1?
- 1...dxc2
- 2.Sf3#
- 1...Se4
- 2.Qxe4#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sd5
- 2.Sf3#
- 2.Qe4#
- 1...e6
- 2.Qf4#
- 1...h5
- 2.Sxg6#
- 1...h6
- 2.Sxg6#
- 1...g2!
- 1...dxc2
- 1.Be4?
- threat
- 2.Sf3#
- 1...Kd4
- 2.Sf3#
- 1...Sxe4!
- threat
- 1.Bxe7?
- 1...dxc2
- 2.Sf3#
- 1...Se4
- 2.Qxe4#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sd5
- 2.Sf3#
- 2.Qe4#
- 1...h5
- 2.Sxg6#
- 1...h6
- 2.Sxg6#
- 1...g5!
- 1...dxc2
- 1.Rd1?
- 1...Sxd1
- 2.Qe4#
- 1...dxc2
- 2.Sf3#
- 1...Se4
- 2.Qxe4#
- 1...Sb1
- 2.Re1#
- 2.Qe4#
- 1...Sa2
- 2.Re1#
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Re1#
- 2.Qe4#
- 1...Sd5
- 2.Sf3#
- 2.Qe4#
- 1...e6
- 2.Qf4#
- 1...h5
- 2.Sxg6#
- 1...h6
- 2.Sxg6#
- 1...d2!
- 1...Sxd1
- 1.Re2+?
- 1...Sxe2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...dxe2!
- 1...Sxe2
- 1.Qf5+?
- 1...Kd4
- 2.Sf3#
- 1...gxf5!
- 1...Kd4
- 1.Qe6+?
- 1...Kd4
- 2.Sf3#
- 2.Be3#
- 2.Qe3#
- 1...Kxe6!
- 1...Kd4
- 1.Qxg3+?
- 1...Kd4
- 2.Be3#
- 2.Qe3#
- 1...Ke6!
- 1...Kd4
- 1.cxd3?
- threat
- 2.d4#
- 1...Se4
- 2.Qxe4#
- 1...Se2
- 2.Rxe2#
- 2.Qe4#
- 1...cxd3!
- threat
- 1.Bh1?
- Keys
- 1.Qd7!
- 1...dxc2
- 2.Qxe7#
- 1...Sd5
- 2.Qxd5#
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Se4
- 2.Sf3#
- 1...e6
- 2.Qg7#
- 1...h5
- 2.Sxg6#
- 1...h6
- 2.Sxg6#
- 1...dxc2
- 1.Qd7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- P(b);XP(B)::S(G)
- P(i);SBLOCK::QAB1(F)
- P(j);N_GUARD::S(G),XP(g)
- Tries
- Try
- B(D);
- Vars
- P(b);XP(B)::S(G)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD::QAR1(F)
- P(i);SBLOCK::QAB1(F)
- P(j);N_GUARD::S(G),XP(g)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- S(G)
- Vars
- K(f);P_SPINP(b),S_FLIGHT::S(G)
- Refutation
- S(a);XB(D)
- Try
- B(I);XP(i)
- Vars
- P(b);XP(B)::S(G)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD::QAR1(F)
- P(j);N_GUARD::S(G),XP(g)
- Refutation
- P(g);
- Try
- R(C);
- Vars
- S(a);N_GUARD,XR(C)::QAR1(F)
- P(b);XP(B)::S(G)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD::QAR1(F)
- P(i);SBLOCK::QAB1(F)
- P(j);N_GUARD::S(G),XP(g)
- Refutation
- P(b);
- Try
- R(C);CHECK
- Vars
- S(a);N_GUARD,XR(C)::QAR1(F)
- S(a);N_GUARD,P_SPINS(a)::QAR1(F),XS(a)
- Refutation
- P(b);XR(C)
- Try
- Q(F);CHECK
- Vars
- K(f);P_SPINP(b),S_FLIGHT::S(G)
- Refutation
- P(g);XQ(F)
- Try
- Q(F);CHECK
- Refutation
- K(f);P-FLIGHT,XQ(F)
- Try
- Q(F);CHECK,XP(c)
- Refutation
- K(f);P-FLIGHT
- Try
- P(B);XP(b)
- Threat
- P(B)
- Vars
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- P(d);XP(B)
- Try
- Actual
- Q(F);
- Vars
- P(b);XP(B)::QAR2(F),XP(i)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD::QAR1(F)
- S(a);SBLOCK::S(G)
- P(i);OGATE,SBLOCK::QAB(F)
- P(j);N_GUARD::S(G),XP(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).