MESON Chess Problem Database
Problem Display
PID: 237253 (8/p4B1p/2R5/4pk1p/r1p2nbP/r3Q1K1/3N4/B2NnR2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schweizerische Schachzeitung, 2010
#2
9 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxa1
- 2.Qe4#
- 1...Ra2
- 2.Qe4#
- 2.Qxe5#
- 1...Rxe3+
- 2.Sxe3#
- 1...Bf3
- 2.Qxe5#
- 1...Sd3
- 2.Qe4#
- 1...Sf3
- 2.Qe4#
- 1...e4
- 2.Rxf4#
- 2.Rc5#
- 2.Rf6#
- 1...h6
- 2.Bg6#
- 1...Rxa1
- Tries
- 1.Bc3?
- threat
- 2.Qe4#
- 2.Qxe5#
- 1...Ra5
- 2.Qe4#
- 1...Bf3
- 2.Qxe5#
- 1...Sd3
- 2.Qe4#
- 1...Sf3
- 2.Qe4#
- 1...e4
- 2.Rxf4#
- 2.Rc5#
- 2.Rf6#
- 2.Qxf4#
- 2.Qc5#
- 2.Qxe4#
- 1...Rxc3!
- threat
- 1.Bxe5?
- threat
- 2.Rxf4#
- 2.Rf6#
- 1...Ra6
- 2.Rxf4#
- 1...Bf3
- 2.Rf6#
- 2.Qxf4#
- 1...Sg2
- 2.Rf6#
- 1...Sd3
- 2.Rf6#
- 2.Qe4#
- 1...Sf3
- 2.Rf6#
- 2.Qxf4#
- 2.Qe4#
- 1...c3
- 2.Rf6#
- 1...Rxe3+!
- threat
- 1.Bd5?
- threat
- 2.Be4#
- 1...Rxe3+
- 2.Sxe3#
- 1...Bf3
- 2.Qxe5#
- 1...e4
- 2.Bxe4#
- 2.Rxf4#
- 2.Rf6#
- 1...c3!
- threat
- 1.Be8?
- threat
- 2.Bd7#
- 1...Rxe3+
- 2.Sxe3#
- 1...Bf3
- 2.Qxe5#
- 1...Sf3
- 2.Qe4#
- 1...Rd3!
- threat
- 1.Rf3?
- threat
- 2.Qe4#
- 2.Qxe5#
- 1...Rxa1
- 2.Qe4#
- 1...Rxe3
- 2.Sxe3#
- 1...Bxf3
- 2.Qxe5#
- 1...Sxf3
- 2.Qe4#
- 1...Rc3
- 2.Qe4#
- 1...Ra5
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...e4
- 2.Rxf4#
- 2.Rc5#
- 2.Rf6#
- 2.Qxf4#
- 2.Qc5#
- 2.Qxe4#
- 1...c3!
- threat
- 1.Rh6?
- threat
- 2.Be6#
- 1...Rxe3+
- 2.Sxe3#
- 1...Bf3
- 2.Qxe5#
- 1...Sf3
- 2.Qe4#
- 1...Ra6!
- threat
- 1.Qd3+?
- 1...Sxd3
- 2.Se3#
- 1...cxd3
- 2.Se3#
- 1...e4
- 2.Se3#
- 2.Rxf4#
- 2.Rc5#
- 2.Rf6#
- 1...Rxd3+!
- 1...Sxd3
- 1.Bc3?
- Keys
- 1.Bg8!
- threat
- 2.Bxh7#
- 1...Rxe3+
- 2.Sxe3#
- 1...Bf3
- 2.Qxe5#
- 1...Sf3
- 2.Qe4#
- 1...h6
- 2.Bh7#
- threat
- 1.Bg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(b);N_PINQ(E),XB(A)::QAB1(E)
- R(b);CHECK,XQ(E)::S(B),XR(b)
- B(f);N_PINQ(E),N_SPINS(e)::QAR1(E),XP(g)
- S(a);N_PINQ(E)::QAB1(E)
- S(a);N_PINQ(E),N_SPINS(e)::QAB1(E)
- P(k);N_GUARD::B(I)
- Tries
- Try
- B(A);N_SPINQ(E)
- Threat
- DUALS(2)
- Vars
- R(c);::QAB1(E)
- B(f);N_SPINS(e)::QAR1(E),XP(g)
- S(a);::QAB1(E)
- S(a);N_SPINS(e)::QAB1(E)
- Refutation
- R(b);P_PINQ(E),XB(A)
- Try
- B(A);XP(g)
- Threat
- DUALS(2)
- Vars
- R(c);::R1(C),XS(e)
- S(a);::R1(H)
- P(d);N_PINQ(E)::R1(H)
- Refutation
- R(b);CHECK,XQ(E)
- Try
- B(I);
- Threat
- B(I)
- Vars
- R(b);CHECK,XQ(E)::S(B),XR(b)
- B(f);N_PINQ(E),N_SPINS(e)::QAR1(E),XP(g)
- Refutation
- P(d);N_PINQ(E)
- Try
- B(I);
- Threat
- B(I)
- Vars
- R(b);CHECK,XQ(E)::S(B),XR(b)
- B(f);N_PINQ(E),N_SPINS(e)::QAR1(E),XP(g)
- S(a);N_PINQ(E),N_SPINS(e)::QAB1(E)
- Refutation
- R(b);
- Try
- R(C);N_SPINQ(E)
- Threat
- DUALS(2)
- Vars
- R(b);XB(A)::QAB1(E)
- R(b);P_PINR(C),XQ(E)::S(B),XR(b)
- B(f);N_SPINS(e),XR(C)::QAR1(E),XP(g)
- S(a);N_SPINS(e),XR(C)::QAB1(E)
- R(b);::QAB1(E)
- R(c);::QAB1(E)
- S(a);::QAB1(E)
- Refutation
- P(d);
- Try
- R(H);
- Threat
- B(I)
- Vars
- R(b);CHECK,XQ(E)::S(B),XR(b)
- B(f);N_PINQ(E),N_SPINS(e)::QAR1(E),XP(g)
- S(a);N_PINQ(E),N_SPINS(e)::QAB1(E)
- Refutation
- R(c);
- Try
- Q(E);CHECK
- Vars
- S(a);XQ(E)::S(B)
- P(d);XQ(E)::S(B)
- Refutation
- R(b);CHECK,XQ(E)
- Try
- Actual
- B(I);
- Threat
- B(I),XP(k)
- Vars
- R(b);CHECK,XQ(E)::S(B),XR(b)
- B(f);N_PINQ(E),N_SPINS(e)::QAR1(E),XP(g)
- S(a);N_PINQ(E),N_SPINS(e)::QAB1(E)
- P(k);::B(I)
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).