MESON Chess Problem Database
Problem Display
PID: 243290 (1r6/pb3Q1R/k1pNpbP1/2B5/1P6/p1p3R1/8/4K3 w - - 0 1)
Andersen, Idon Bruno Hovedskou
Skakbladet, 1952
#2
8 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...Ra8
- Tries
- 1.Rh1?
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Ra8
- 1.Rhh3?
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Ra8
- 1.Rh4?
- 1...Bxh4
- 2.Qf1#
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Bxh4
- 1.Rh5?
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Ra8
- 1.Rh6?
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Ra8
- 1.Rg7?
- 1...Bxg7
- 2.Qf1#
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Bxg7
- 1.Rh8?
- 1...Rxh8
- 2.Qxb7#
- 1...Bxh8
- 2.Qf1#
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Rxh8
- 1.Qxe6?
- threat
- 2.Qc4#
- 2.Qe2#
- 1...Be5
- 2.Qc4#
- 1...Ba8
- 2.Rxa7#
- 1...Bc8
- 2.Rxa7#
- 1...Re8!
- threat
- 1.Qxf6?
- threat
- 2.Qf1#
- 1...Ba8
- 2.Rxa7#
- 1...Bc8
- 2.Rxa7#
- 1...Rf8!
- threat
- 1.g7?
- 1...Bxg7
- 2.Qf1#
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2!
- 1...Bxg7
- 1.Rh1?
- Keys
- 1.Rh2!
- 1...a2
- 2.Rxa2#
- 1...Ra8
- 2.Qxb7#
- 1...Rc8
- 2.Qxb7#
- 1...Rd8
- 2.Qxb7#
- 1...Re8
- 2.Qxb7#
- 1...Rf8
- 2.Qxb7#
- 1...Rg8
- 2.Qxb7#
- 1...Rh8
- 2.Qxb7#
- 1...Bd4
- 2.Qf1#
- 1...Bh4
- 2.Qf1#
- 1...Be5
- 2.Qf1#
- 1...Bg5
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bd8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Ba8
- 2.Qxa7#
- 1...Bc8
- 2.Qxa7#
- 1...c2
- 2.Rxa3#
- 1...e5
- 2.Qc4#
- 1...a2
- 1.Rh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Tries
- Try
- R(H);
- Vars
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- R(H);
- Vars
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- R(H);
- Vars
- B(f);OGATE,P_PINR(B),SBLOCK,XR(H)::QAB(G)
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- R(H);
- Vars
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- R(H);
- Vars
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- R(H);
- Vars
- B(f);OGATE,XR(H)::QAB(G)
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B),SBLOCK::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- R(H);
- Vars
- R(i);N_GUARD,XR(H)::QAB1(G),XB(h)
- B(f);OGATE,XR(H)::QAB(G)
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- Q(G);XP(e)
- Threat
- DUALS(2)
- Vars
- B(f);::QAB(G)
- B(h);OGATE::R1(H),XP(g)
- Refutation
- R(i);P_PINQ(G)
- Try
- Q(G);XB(f)
- Threat
- QAB(G)
- Vars
- B(h);OGATE::R1(H),XP(g)
- Refutation
- R(i);
- Try
- P(F);
- Vars
- B(f);OGATE,XP(F)::QAB(G)
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(G)
- Refutation
- P(a);
- Try
- Actual
- R(H);
- Vars
- P(a);OGATEB::R(H),XP(a)
- R(i);N_GUARD::QAB1(G),XB(h)
- B(f);OGATE::QAB(G)
- B(f);OGATE,P_PINR(B)::QAB(G)
- B(h);OGATE::QAR1(G),XP(g)
- P(b);OGATE::R(B),XP(a)
- P(e);OGATE::QAB(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).