MESON Chess Problem Database
Problem Display
PID: 33321 (8/4n1n1/1Q4pq/5p1r/b1k2NP1/b1rN2Kp/2PP4/4RRBB w - - 0 1)
Ahues, Herbert Siegfried Oskar
2nd Prize, Suomen Shakki, 1949
#2
11 + 11
| 3105 | FIDE Album (1945-1955) | 1964 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4+
- 2.Rxf4#
- 1...Rxc2
- 2.Se5#
- 1...Rxd3+
- 2.cxd3#
- 1...Bc1
- 2.Qc5#
- 2.Qb4#
- 1...Bb2
- 2.Qc5#
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...Bb3
- 2.Qa6#
- 1...Bb5
- 2.Qd4#
- 1...Sd5
- 2.Bxd5#
- 1...Sc6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...fxg4
- 2.Re4#
- 1...Qxf4+
- Tries
- 1.Be3?
- threat
- 2.Se5#
- 1...Qxf4+
- 2.Rxf4#
- 1...Rxd3
- 2.cxd3#
- 1...Bd6
- 2.Sb2#
- 1...Bb5
- 2.Qd4#
- 1...Sc6
- 2.Bd5#
- 1...fxg4!
- threat
- 1.Bf3?
- threat
- 2.Se5#
- 1...Rxd3
- 2.cxd3#
- 1...fxg4
- 2.Re4#
- 1...Bd6
- 2.Sb2#
- 1...Bb5
- 2.Qd4#
- 1...Sc6
- 2.Bd5#
- 1...Qxf4+!
- threat
- 1.Re3?
- threat
- 2.Se5#
- 1...Qxf4+
- 2.Rxf4#
- 1...Rxd3
- 2.cxd3#
- 1...fxg4
- 2.Re4#
- 1...Bc5
- 2.Qxc5#
- 1...Bd6
- 2.Sb2#
- 1...Sc6
- 2.Bd5#
- 1...Bb5!
- threat
- 1.Rxe7?
- threat
- 2.Bd5#
- 1...Qxf4+
- 2.Rxf4#
- 1...Rxd3+
- 2.cxd3#
- 1...fxg4
- 2.Re4#
- 1...Bc6!
- threat
- 1.Rf3?
- threat
- 2.Se5#
- 1...Qxf4+
- 2.Rxf4#
- 1...Rxd3
- 2.cxd3#
- 1...fxg4
- 2.Re4#
- 1...Bd6
- 2.Sb2#
- 1...Bb5
- 2.Qd4#
- 1...Sc6!
- threat
- 1.Be3?
- Keys
- 1.Kh2!
- threat
- 2.Se5#
- 1...Qxf4+
- 2.Rxf4#
- 1...Rxd3
- 2.cxd3#
- 1...fxg4
- 2.Re4#
- 1...Bd6
- 2.Sb2#
- 1...Bb5
- 2.Qd4#
- 1...Sc6
- 2.Bd5#
- threat
- 1.Kh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(i);CHECK,OGATE,XS(I)::R(B),XQ(i)
- R(b);N_PINS(G),XP(E)::S(G)
- R(b);CHECK,OGATE,XS(G)::P(E),XR(b)
- B(a);N_GUARD::QAR1(K),XB(a)
- B(d);N_GUARD::QAB(K)
- B(d);SBLOCK::QAR1(K)
- S(j);N_GUARD::B(D),XS(j)
- S(j);N_GUARD::B(D)
- P(f);N_GUARD,XP(J)::R(A)
- Tries
- Try
- B(C);N_SPINS(G)
- Threat
- S(G)
- Vars
- Q(i);CHECK,OGATE,XS(I)::R(B),XQ(i)
- R(b);OGATE,P_PINB(C),XS(G)::P(E),XR(b)
- B(a);N_GUARD,P_PINS(I)::S(G)
- B(d);SBLOCK::QAR1(K)
- S(j);N_GUARD::B(D)
- Refutation
- P(f);XP(J)
- Try
- B(D);N_SPINS(G)
- Threat
- S(G)
- Vars
- R(b);OGATE,P_PINB(D),XS(G)::P(E),XR(b)
- P(f);N_GUARD,XP(J)::R(A)
- B(a);N_GUARD,P_PINS(I)::S(G)
- B(d);SBLOCK::QAR1(K)
- S(j);N_GUARD::B(D)
- Refutation
- Q(i);CHECK,XS(I)
- Try
- R(A);N_SPINS(G)
- Threat
- S(G)
- Vars
- Q(i);CHECK,OGATE,XS(I)::R(B),XQ(i)
- R(b);OGATE,P_PINR(A),XS(G)::P(E),XR(b)
- P(f);N_GUARD,XP(J)::R(A)
- B(a);N_GUARD::QAR1(K),XB(a)
- B(a);N_GUARD,P_PINS(I)::S(G)
- S(j);N_GUARD::B(D)
- Refutation
- B(d);
- Try
- R(A);XS(j)
- Threat
- B(D)
- Vars
- Q(i);CHECK,OGATE,XS(I)::R(B),XQ(i)
- R(b);CHECK,OGATE,XS(G)::P(E),XR(b)
- P(f);N_GUARD,XP(J)::R(A)
- Refutation
- B(d);
- Try
- R(B);N_SPINS(G)
- Threat
- S(G)
- Vars
- Q(i);CHECK,OGATE,XS(I)::R(B),XQ(i)
- R(b);OGATE,P_PINR(B),XS(G)::P(E),XR(b)
- P(f);N_GUARD,XP(J)::R(A)
- B(a);N_GUARD,P_PINS(I)::S(G)
- B(d);SBLOCK::QAR1(K)
- Refutation
- S(j);
- Try
- Actual
- K(H);N_SPINS(G),S_FLIGHT
- Threat
- S(G)
- Vars
- Q(i);CHECK,OGATE,XS(I)::R(B),XQ(i)
- R(b);OGATE,XS(G)::P(E),XR(b)
- P(f);N_GUARD,XP(J)::R(A)
- B(a);N_GUARD,P_PINS(I)::S(G)
- B(d);SBLOCK::QAR1(K)
- S(j);N_GUARD::B(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).