MESON Chess Problem Database
Problem Display
PID: 271398 (8/1n2B3/4P3/3R2P1/p3Nkrn/K1Q4P/1p4p1/1Bb1N1R1 w - - 0 1)
Bolus, Andrew
Sunday Referee, 1933
(First published on Sun Jan 15 1933)
#2
11 + 8
| 15239 | Valois Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Rg3
- 2.Qxg3#
- 1...Rxg5
- 2.Bxg5#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sc5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Rg3
- Tries
- 1.Ka2?
- 1...Rxg5
- 2.Bxg5#
- 1...Rg3
- 2.Qxg3#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sc5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...a3!
- 1...Rxg5
- 1.Kxa4?
- 1...Rxg5
- 2.Bxg5#
- 1...Rg3
- 2.Qxg3#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Sc5+!
- 1...Rxg5
- 1.Kb4?
- 1...Rxg5
- 2.Bxg5#
- 1...Rg3
- 2.Qxg3#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sc5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...a3!
- 1...Rxg5
- 1.Sxg2+?
- 1...Sxg2
- 2.Rf1#
- 1...Rxg2!
- 1...Sxg2
- 1.Sd2?
- threat
- 2.Qe5#
- 1...Rxg5
- 2.Bxg5#
- 1...Sf3
- 2.Qxf3#
- 1...Sg6
- 2.Rf5#
- 2.Qf3#
- 1...Rg3!
- threat
- 1.Sf2?
- threat
- 2.Qe5#
- 1...Rxg5
- 2.Bxg5#
- 1...Sf3
- 2.Qxf3#
- 1...Sg6
- 2.Rf5#
- 2.Qf3#
- 1...Rg3!
- threat
- 1.Sg3?
- threat
- 2.Se2#
- 2.Sh5#
- 2.Qe5#
- 1...Rxg5
- 2.Se2#
- 2.Bxg5#
- 1...Sf3
- 2.Se2#
- 2.Sh5#
- 2.Qxf3#
- 1...Sg6
- 2.Sxg2#
- 2.Se2#
- 2.Sh5#
- 2.Rf5#
- 2.Qf3#
- 1...Rxg3!
- threat
- 1.Sc5?
- threat
- 2.Qe5#
- 1...Rxg5
- 2.Bxg5#
- 1...Sf3
- 2.Qxf3#
- 1...Sg6
- 2.Rf5#
- 2.Qf3#
- 1...Rg3!
- threat
- 1.Sd6?
- threat
- 2.Qe5#
- 1...Rxg5
- 2.Bxg5#
- 1...Sf3
- 2.Qxf3#
- 1...Sg6
- 2.Rf5#
- 2.Qf3#
- 1...Rg3!
- threat
- 1.Sf6?
- threat
- 2.Sh5#
- 2.Qe5#
- 1...Sf3
- 2.Sh5#
- 2.Qxf3#
- 1...Sf5
- 2.Sh5#
- 2.Rxf5#
- 1...Rg3
- 2.Sh5#
- 1...Sg6
- 2.Sh5#
- 2.Rf5#
- 2.Qf3#
- 1...Rxg5!
- threat
- 1.Bf8?
- 1...Rg3
- 2.Qxg3#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sc5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Rxg5!
- 1...Rg3
- 1.Rxg2?
- threat
- 2.Rxg4#
- 1...Rxg5
- 2.Bxg5#
- 1...Sxg2
- 2.Qf3#
- 1...Rg3
- 2.Qxg3#
- 1...Rxg2!
- threat
- 1.Rb5?
- 1...Rxg5
- 2.Bxg5#
- 1...Rg3
- 2.Qxg3#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Sc5!
- 1...Rxg5
- 1.Rc5?
- 1...Rxg5
- 2.Bxg5#
- 1...Rg3
- 2.Qxg3#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Sxc5!
- 1...Rxg5
- 1.Rf5+?
- 1...Kxf5
- 2.Qf6#
- 1...Sxf5!
- 1...Kxf5
- 1.Qf6+?
- 1...Ke3
- 2.Qf2#
- 1...Sf5!
- 1...Ke3
- 1.Qd3?
- 1...Rxg5
- 2.Bxg5#
- 1...Rg3
- 2.Qxg3#
- 1...Bd2
- 2.Qxd2#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sc5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Be3!
- 1...Rxg5
- 1.g6?
- 1...Sxg6
- 2.Qf3#
- 1...Rg3
- 2.Qxg3#
- 1...Rg5
- 2.Bxg5#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qf3#
- 1...Sa5
- 2.Bd6#
- 1...Sc5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Rxg6!
- 1...Sxg6
- 1.Ka2?
- Keys
- 1.Qd4!
- 1...Rg3+
- 2.Sc3#
- 1...Rxg5
- 2.Bxg5#
- 1...Bd2
- 2.Qxd2#
- 1...Be3
- 2.Qe5#
- 1...Sf3
- 2.Sd3#
- 1...Sf5
- 2.Qf2#
- 1...Sg6
- 2.Qf2#
- 1...Sa5
- 2.Bd6#
- 1...Sc5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sd8
- 2.Bd6#
- 1...Rg3+
- 1.Qd4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD,P_PINQ(E)::QAB1(E),XR(f)
- R(f);OGATE,XP(I)::B(K),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- R(f);N_GUARD::QAB1(E),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- P(d);
- Try
- K(D);P-FLIGHT,XP(d)
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- R(f);N_GUARD::QAB1(E),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- S(h);CHECK
- Try
- K(D);S_FLIGHT
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- R(f);N_GUARD::QAB1(E),XR(f)
- B(a);N_GUARD,P_PINQ(E)::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- P(d);
- Try
- S(B);CHECK,XP(c)
- Vars
- S(g);XS(B)::R(C)
- Refutation
- R(f);XS(B)
- Try
- S(G);
- Threat
- QAB1(E)
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- S(g);N_GUARD::QAR1(E),XS(g)
- Refutation
- R(f);P_PINQ(E)
- Try
- S(G);
- Threat
- QAB1(E)
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- S(g);N_GUARD::QAR1(E),XS(g)
- Refutation
- R(f);P_PINQ(E)
- Try
- S(G);
- Threat
- DUALS(3)
- Refutation
- R(f);P_PINQ(E),XS(G)
- Try
- S(G);
- Threat
- QAB1(E)
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- S(g);N_GUARD::QAR1(E),XS(g)
- Refutation
- R(f);P_PINQ(E)
- Try
- S(G);
- Threat
- QAB1(E)
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- S(g);N_GUARD::QAR1(E),XS(g)
- Refutation
- R(f);P_PINQ(E)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);P_PINQ(E)::S(G)
- Refutation
- R(f);XP(I)
- Try
- B(K);
- Vars
- R(f);N_GUARD,P_PINQ(E)::QAB1(E),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- R(f);XP(I)
- Try
- R(C);XP(c)
- Threat
- R1(C),XR(f)
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- S(g);N_GUARD,XR(C)::QAR1(E)
- R(f);N_GUARD,P_PINQ(E)::QAB1(E),XR(f)
- Refutation
- R(f);XR(C)
- Try
- R(H);
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- R(f);N_GUARD,P_PINQ(E)::QAB1(E),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- S(h);
- Try
- R(H);
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- R(f);N_GUARD,P_PINQ(E)::QAB1(E),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- S(h);XR(H)
- Try
- R(H);CHECK
- Vars
- K(e);N_GUARD,P-FLIGHT,S_CUTS(g),XR(H)::QAR1(E)
- Refutation
- S(g);XR(H)
- Try
- Q(E);CHECK
- Vars
- K(e);OGATE,S_FLIGHT::QAB1(E)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(E);
- Vars
- R(f);OGATE,XP(I)::B(K),XR(f)
- R(f);N_GUARD,P_PINQ(E)::QAB1(E),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- B(a);
- Try
- P(I);
- Vars
- S(g);N_GUARD,XP(I)::QAR1(E)
- R(f);N_GUARD,P_PINQ(E)::QAB1(E),XR(f)
- R(f);N_GUARD::B(K),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);N_GUARD::QAR1(E),XS(g)
- S(g);N_GUARD::QAR1(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- R(f);XP(I)
- Try
- Actual
- Q(E);
- Vars
- R(f);CHECK,SBLOCK::QAR(E)+S(G)
- R(f);OGATE,XP(I)::B(K),XR(f)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB1(E)
- S(g);SBLOCK::S(B)
- S(g);N_GUARD::QAR2(E)
- S(h);N_GUARD::B(K)
- S(h);N_GUARD::B(K),XS(h)
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).