MESON Chess Problem Database
Problem Display
PID: 260997 (3R4/8/2P1K3/2pB3p/r1rkp1nR/pp3p2/2n1P3/1Q1N4 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Neue Zurcher Zeitung, 1974
#2
8 + 11
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Bxb3#
- 1...Rb4
- 2.Bxb3#
- 1...Sa1
- 2.Bxe4#
- 2.Qxe4#
- 1...Se1
- 2.Bxe4#
- 2.Qxe4#
- 1...Sce3
- 2.Qxe4#
- 1...Sb4
- 2.Qxe4#
- 1...Sf2
- 2.Bxe4#
- 1...Sh2
- 2.Bxe4#
- 2.Rxe4#
- 1...Sge3
- 2.Rxe4#
- 1...Se5
- 2.Rxe4#
- 1...Sh6
- 2.Bxe4#
- 2.Rxe4#
- 1...e3
- 2.Bxf3#
- 1...Rc3
- Tries
- 1.Rxg4?
- threat
- 2.Bxe4#
- 2.Rxe4#
- 1...fxe2
- 2.Bxe4#
- 1...Ra7
- 2.Rxe4#
- 1...Ra8
- 2.Rxe4#
- 1...Rc3
- 2.Bxb3#
- 2.Rxe4#
- 1...Rcb4
- 2.Bxb3#
- 2.Rxe4#
- 1...Se3
- 2.Rxe4#
- 2.Qd3#
- 2.Qxe4#
- 1...Sb4
- 2.Rxe4#
- 2.Qxe4#
- 2.e3#
- 1...hxg4!
- threat
- 1.Qxc2?
- threat
- 2.Bxc4#
- 2.Bxe4#
- 2.Qxe4#
- 2.Qd2#
- 1...Rxc2
- 2.Bxb3#
- 1...Ra7
- 2.Qxe4#
- 2.Qd2#
- 2.Qxc4#
- 1...Ra8
- 2.Qxe4#
- 2.Qd2#
- 2.Qxc4#
- 1...Rc3
- 2.Bxb3#
- 2.Qxe4#
- 2.Qxc3#
- 1...Rcb4
- 2.Bxb3#
- 2.Bc4#
- 2.Bxe4#
- 2.Qxe4#
- 2.Qd2#
- 2.Qc3#
- 1...Sf2
- 2.Bxc4#
- 2.Bxe4#
- 2.e3#
- 1...Se3
- 2.Rxe4#
- 2.Qd3#
- 2.Qxe4#
- 2.Qd2#
- 1...Se5
- 2.Rxe4#
- 2.Qxe4#
- 2.e3#
- 1...Sf6
- 2.Qd3#
- 2.Qd2#
- 2.e3#
- 1...e3
- 2.Bxf3#
- 2.Bxc4#
- 2.Be4#
- 2.Qd3#
- 2.Qe4#
- 1...bxc2!
- threat
- 1.Qb2+?
- 1...Rc3
- 2.Bxb3#
- 2.Qxc3#
- 1...axb2!
- 1...Rc3
- 1.Qxb3?
- threat
- 2.Bxc4#
- 1...Ra7
- 2.Qxc4#
- 1...Ra8
- 2.Qxc4#
- 1...Rc3
- 2.Bc4#
- 2.Qxc3#
- 1...Rcb4
- 2.Bc4#
- 2.Qc3#
- 1...Sb4
- 2.Qxc4#
- 1...Sge3
- 2.Rxe4#
- 2.Qd3#
- 1...Se5
- 2.Rxe4#
- 1...Sf6
- 2.Qd3#
- 1...e3
- 2.Bxf3#
- 2.Qd3#
- 1...Sce3!
- threat
- 1.c7?
- threat
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Ra6+
- 2.Bc6#
- 1...Ra8
- 2.Bxa8#
- 1...Rc3
- 2.Bxb3#
- 1...Rcb4
- 2.Bxb3#
- 1...Sce3
- 2.Qxe4#
- 1...Sb4
- 2.Qxe4#
- 1...Sge3
- 2.Rxe4#
- 1...Se5
- 2.Rxe4#
- 1...Sf6!
- threat
- 1.Rxg4?
- Keys
- 1.Qc1!
- threat
- 2.Qd2#
- 1...Rc3
- 2.Bxb3#
- 1...Se1
- 2.Bxc4#
- 1...Sb4
- 2.Qxc4#
- 1...Sf2
- 2.Bxe4#
- 1...Se5
- 2.Rxe4#
- 1...e3
- 2.Bxf3#
- threat
- 1.Qc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(f);OGATE::R(H)+B(E),XP(c)
- S(a);OGATE::QAR1(A),XP(h)
- S(i);P_SPINP(h)::R(H)+B(E),XP(h)
- S(i);OGATE,P_SPINP(h)::R1(D),XP(h)
- P(h);OGATE,P_SPINS(i)::R(H)+B(E),XP(d)
- Tries
- Try
- R(D);P_PINP(h),XS(i)
- Threat
- DUALS(2)
- Vars
- P(d);XP(C)::R(H)+B(E),XP(h)
- R(e);::R1(D),XP(h)
- Refutation
- P(k);N_SPINP(h),XR(D)
- Try
- Q(A);XS(a)
- Threat
- DUALS(4)
- Vars
- R(f);OGATE,XQ(A)::R(H)+B(E),XP(c)
- Refutation
- P(c);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- P(b);XQ(A)
- Try
- Q(A);XP(c)
- Threat
- R(H)+B(E),XR(f)
- Vars
- R(e);N_GUARD::QAR1(A),XR(f)
- S(a);S_CUTR(e)::QAR1(A),XR(f)
- S(i);OGATE,P_SPINP(h)::R1(D),XP(h)
- S(i);P_SPINP(h)::QAR1(A)
- Refutation
- S(a);
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- R(e);CHECK::R(H)+B(E)
- R(e);::R(H)+B(E),XR(e)
- R(f);OGATE::R(H)+B(E),XP(c)
- S(a);OGATE::QAR1(A),XP(h)
- S(i);OGATE,P_SPINP(h)::R1(D),XP(h)
- Refutation
- S(i);P_SPINP(h)
- Try
- Actual
- Q(A);
- Threat
- QAR2(A)
- Vars
- R(f);OGATE::R(H)+B(E),XP(c)
- S(a);::R(H)+B(E),XR(f)
- S(a);OGATE::QAR1(A),XR(f)
- S(i);P_SPINP(h)::R(H)+B(E),XP(h)
- S(i);OGATE,P_SPINP(h)::R1(D),XP(h)
- P(h);OGATE,P_SPINS(i)::R(H)+B(E),XP(d)
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).