MESON Chess Problem Database
Problem Display
PID: 158284 (8/n2RPp2/2r5/1b3NB1/4kPP1/3p3R/6rp/1Q4bK w - - 0 1)
Ahues, Herbert Siegfried Oskar
Deutsche Schachzeitung, 1961
#2
9 + 9
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rf2
- 2.Re3#
- 2.Rd4#
- 1...Rc1
- 2.e8Q#
- 2.e8R#
- 1...Rc2
- 2.e8Q#
- 2.e8R#
- 1...Rc3
- 2.e8Q#
- 2.e8R#
- 1...Rc4
- 2.Qxd3#
- 2.e8Q#
- 2.e8R#
- 1...Rc7
- 2.e8Q#
- 2.e8R#
- 1...Be3
- 2.Rxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Ba4
- 2.Qxd3#
- 1...Rf2
- Tries
- 1.Rdxd3?
- threat
- 2.Rd4#
- 1...Bxd3
- 2.Qxd3#
- 1...Bd4
- 2.Rxd4#
- 1...Rg3
- 2.Sxg3#
- 1...Rcc2
- 2.Sd6#
- 1...Rgc2!
- threat
- 1.Qa2?
- threat
- 2.Qd5#
- 2.Qxg2#
- 1...Rxg4
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rb2
- 2.Qd5#
- 1...Rgc2
- 2.Qd5#
- 1...Rd2
- 2.Qd5#
- 1...Re2
- 2.Qd5#
- 1...Rf2
- 2.Re3#
- 2.Rd4#
- 2.Qd5#
- 1...Rcc2
- 2.Qd5#
- 2.e8Q#
- 2.e8R#
- 1...Rc4
- 2.Qxg2#
- 2.e8Q#
- 2.e8R#
- 1...Rc5
- 2.Qxg2#
- 1...Rd6
- 2.Qxg2#
- 1...Bf2
- 2.Qd5#
- 1...Bc4
- 2.Qxg2#
- 1...d2
- 2.Qd5#
- 1...Rxa2!
- threat
- 1.Qe1+?
- 1...Be3
- 2.Rxe3#
- 2.Rd4#
- 2.Qxe3#
- 1...Re2!
- 1...Be3
- 1.Qb4+?
- 1...Rc4
- 2.e8Q#
- 2.e8R#
- 1...Bd4
- 2.Re3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Bc4!
- 1...Rc4
- 1.Qxb5?
- threat
- 2.Qxd3#
- 2.Qd5#
- 2.Qe5#
- 1...Rg3
- 2.Qd5#
- 1...Rd2
- 2.Qd5#
- 2.Qe5#
- 1...Rc3
- 2.Qd5#
- 2.Qe5#
- 2.e8Q#
- 2.e8R#
- 1...Rc4
- 2.Qd5#
- 2.Qe5#
- 2.e8Q#
- 2.e8R#
- 1...Rc5
- 2.Qxd3#
- 1...Rd6
- 2.Qe5#
- 1...Re6
- 2.Qxd3#
- 2.Qd5#
- 1...Bd4
- 2.Rxd4#
- 2.Qxd3#
- 2.Qd5#
- 1...Bc5
- 2.Qxd3#
- 1...d2
- 2.Qd3#
- 2.Qd5#
- 2.Qe5#
- 1...f6
- 2.Qxd3#
- 2.Qd5#
- 1...Sxb5!
- threat
- 1.Rdxd3?
- Keys
- 1.Rhxd3!
- threat
- 2.Re3#
- 1...Bxd3
- 2.Qxd3#
- 1...Be3
- 2.Rxe3#
- 1...Rgc2
- 2.Sg3#
- 1...Rcc2
- 2.e8Q#
- 2.e8R#
- 1...Rd6
- 2.Sxd6#
- threat
- 1.Rhxd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(g);N_GUARD::P=Q
- R(g);N_GUARD,N_SPINP(d)::P=Q
- B(a);N_GUARD::R1(C),XB(a)
- B(a);N_GUARD::R1(H),XB(a)
- B(f);N_GUARD::QAB1(A),XP(d)
- Tries
- Try
- R(H);XP(d)
- Threat
- QAB(A)+R(H),DCHECK
- Vars
- B(f);OGATE,P_SPINB(f),XR(H)::QAB1(A),XB(f)
- B(a);::QAB(A)+R(H),DCHECK,XB(a)
- R(b);N_GUARD::S(F),XR(b)
- R(g);N_GUARD::S(F)
- Refutation
- R(b);
- Try
- Q(A);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- R(b);XP(E)::QAB1(A)
- R(b);::QAB1(A)
- R(g);::QAB(A),XR(b)
- B(a);::QAB1(A)
- B(f);::QAB(A),XR(b)
- P(d);::QAB1(A)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);CHECK,N_PINP(d)
- Refutation
- R(b);P_SPINR(b)
- Try
- Q(A);CHECK,N_PINP(d)
- Vars
- R(g);P_SPINR(g)::P=Q
- Refutation
- B(f);P_SPINB(f)
- Try
- Q(A);N_PINP(d),XB(f)
- Threat
- DUALS(3)
- Vars
- R(b);::QAB1(A)
- R(g);::QAB1(A),XP(d)
- R(g);::QAR1(A)
- B(a);::QAB1(A),XP(d)
- Refutation
- S(h);XQ(A)
- Try
- Actual
- R(C);XP(d)
- Threat
- QAB(A)+R(C),DCHECK
- Vars
- B(f);OGATE,P_SPINB(f),XR(C)::QAB1(A),XB(f)
- B(a);::QAB(A)+R(C),DCHECK,XB(a)
- R(b);N_GUARD::S(F)
- R(g);N_GUARD::P=Q
- R(g);N_GUARD::S(F),XR(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).