MESON Chess Problem Database
Problem Display
PID: 163192 (8/p1p5/KpP2p2/1n3R2/R2pkP1p/1N2b2B/3pQ3/3r4 w - - 0 1)
Hertmann, Sandor
The Observer, 1925
(First published on Sun Apr 12 1925)
#2
8 + 11
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxd2#
- 1...Rb1
- 2.Sxd2#
- 1...Rc1
- 2.Sxd2#
- 1...Re1
- 2.Sxd2#
- 1...Rf1
- 2.Sxd2#
- 1...Rg1
- 2.Sxd2#
- 1...Rh1
- 2.Sxd2#
- 1...Sa3
- 2.Rxd4#
- 1...Sc3
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Ra1
- Tries
- 1.Sxd4?
- threat
- 2.Sxb5#
- 2.Bg2#
- 1...Ra1
- 2.Bg2#
- 1...Rb1
- 2.Bg2#
- 1...Rc1
- 2.Bg2#
- 1...Rf1
- 2.Sxb5#
- 1...Rg1
- 2.Sxb5#
- 1...Sa3
- 2.Bg2#
- 1...Sc3
- 2.Bg2#
- 1...Sd6
- 2.Bg2#
- 1...Sxd4!
- threat
- 1.Bg4?
- 1...Ra1
- 2.Sxd2#
- 1...Rb1
- 2.Sxd2#
- 1...Rc1
- 2.Sxd2#
- 1...Re1
- 2.Sxd2#
- 1...Rf1
- 2.Sxd2#
- 1...Rg1
- 2.Sxd2#
- 1...Rh1
- 2.Sxd2#
- 1...Sa3
- 2.Rxd4#
- 1...Sc3
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...h3!
- 1...Ra1
- 1.Rb4?
- 1...Sa3
- 2.Rxd4#
- 1...Rb1
- 2.Sxd2#
- 1...Rc1
- 2.Sxd2#
- 1...Re1
- 2.Sxd2#
- 1...Rf1
- 2.Sxd2#
- 1...Rg1
- 2.Sxd2#
- 1...Rh1
- 2.Sxd2#
- 1...Sc3
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Ra1+!
- 1...Sa3
- 1.Rc4?
- 1...Sa3
- 2.Rxd4#
- 1...Rb1
- 2.Sxd2#
- 1...Rc1
- 2.Sxd2#
- 1...Re1
- 2.Sxd2#
- 1...Rf1
- 2.Sxd2#
- 1...Rg1
- 2.Sxd2#
- 1...Rh1
- 2.Sxd2#
- 1...Sc3
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Ra1+!
- 1...Sa3
- 1.Rxb5?
- threat
- 2.Rxd4#
- 1...Kxf4
- 2.Qg4#
- 1...Ra1!
- threat
- 1.Re5+?
- 1...Kxf4
- 2.Qxe3#
- 1...fxe5!
- 1...Kxf4
- 1.Sxd4?
- Keys
- 1.Ra5!
- 1...bxa5
- 2.Sc5#
- 1...Sa3
- 2.Bg2#
- 1...Ra1
- 2.Sxd2#
- 1...Rb1
- 2.Sxd2#
- 1...Rc1
- 2.Sxd2#
- 1...Re1
- 2.Sxd2#
- 1...Rf1
- 2.Sxd2#
- 1...Rg1
- 2.Sxd2#
- 1...Rh1
- 2.Sxd2#
- 1...Sc3
- 2.Bg2#
- 1...Sd6
- 2.Bg2#
- 1...d3
- 2.Qg2#
- 1...bxa5
- 1.Ra5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD,P_PINR(D)::S(B),XP(b)
- R(a);N_GUARD::S(B),XP(b)
- S(g);N_GUARD::R1(D),XP(d)
- Tries
- Try
- S(B);XP(d)
- Threat
- DUALS(2)
- Vars
- R(a);P_PINR(D)::B(C)
- R(a);::B(C)
- R(a);::R(D)+S(B),XS(g)
- S(g);::B(C)
- Refutation
- S(g);P_SPINS(g),XS(B)
- Try
- B(C);
- Vars
- R(a);N_GUARD,P_PINR(D)::S(B),XP(b)
- R(a);N_GUARD::S(B),XP(b)
- S(g);N_GUARD::R1(D),XP(d)
- Refutation
- P(f);
- Try
- R(D);
- Vars
- S(g);N_GUARD::R1(D),XP(d)
- R(a);N_GUARD::S(B),XP(b)
- Refutation
- R(a);CHECK
- Try
- R(D);
- Vars
- S(g);N_GUARD::R1(D),XP(d)
- R(a);N_GUARD::S(B),XP(b)
- Refutation
- R(a);CHECK
- Try
- R(F);XS(g)
- Threat
- R1(D),XP(d)
- Vars
- K(e);N_SPINB(c),OGATEB,P-FLIGHT,XP(E)::QAR1(A)
- Refutation
- R(a);P_PINR(D)
- Try
- R(F);CHECK
- Vars
- K(e);N_SPINB(c),P-FLIGHT,XP(E)::QAB1(A),XB(c)
- Refutation
- P(i);XR(F)
- Try
- Actual
- R(D);N_PINP(d)
- Vars
- P(h);N_GUARD,XR(D)::S(B)
- S(g);::B(C)
- R(a);N_GUARD,P_PINR(D)::S(B),XP(b)
- R(a);N_GUARD::S(B),XP(b)
- P(d);SBLOCK::QAB(A)
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).