MESON Chess Problem Database
Problem Display
PID: 162177 (8/1p3K2/1B1p4/3kb3/Q1p2p2/n2N1P2/2n1N3/8 w - - 0 1)
Holroyd, GC
The Observer, 1924
(First published on Sun Mar 16 1924)
#2
6 + 8
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Sexf4#
- 1...Bb2
- 2.Sexf4#
- 1...Bc3
- 2.Sxc3#
- 2.Sexf4#
- 1...Bd4
- 2.Sexf4#
- 1...Bf6
- 2.Sexf4#
- 1...Bg7
- 2.Sexf4#
- 1...Bh8
- 2.Sexf4#
- 1...Sa1
- 2.Sb4#
- 1...Se1
- 2.Sb4#
- 1...Se3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sd4
- 2.Sc3#
- 2.Sb4#
- 1...Sb1
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...cxd3
- 2.Qe4#
- 1...c3
- 2.Qe4#
- 1...Ba1
- Tries
- 1.Ke7?
- 1...cxd3
- 2.Qe4#
- 1...Sb5
- 2.Qxb5#
- 1...Ba1
- 2.Sexf4#
- 1...Bb2
- 2.Sexf4#
- 1...Bc3
- 2.Sxc3#
- 2.Sexf4#
- 1...Bd4
- 2.Sexf4#
- 1...Bg7
- 2.Sexf4#
- 1...Bh8
- 2.Sexf4#
- 1...Sa1
- 2.Sb4#
- 1...Se1
- 2.Sb4#
- 1...Se3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sd4
- 2.Sc3#
- 2.Sb4#
- 1...Sb1
- 2.Qb5#
- 1...c3
- 2.Qe4#
- 1...Bf6+!
- 1...cxd3
- 1.Bg1?
- 1...cxd3
- 2.Qe4#
- 1...Sb5
- 2.Qxb5#
- 1...b5
- 2.Qa8#
- 1...Ba1
- 2.Sexf4#
- 1...Bb2
- 2.Sexf4#
- 1...Bc3
- 2.Sxc3#
- 2.Sexf4#
- 1...Bd4
- 2.Sexf4#
- 1...Bf6
- 2.Sexf4#
- 1...Bg7
- 2.Sexf4#
- 1...Bh8
- 2.Sexf4#
- 1...Sa1
- 2.Sb4#
- 1...Se1
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sd4
- 2.Sc3#
- 1...Sb1
- 2.Qb5#
- 1...c3
- 2.Qe4#
- 1...b6
- 2.Qa8#
- 1...Se3!
- 1...cxd3
- 1.Bf2?
- 1...cxd3
- 2.Qe4#
- 1...Sb5
- 2.Qxb5#
- 1...b5
- 2.Qa8#
- 1...Ba1
- 2.Sexf4#
- 1...Bb2
- 2.Sexf4#
- 1...Bc3
- 2.Sxc3#
- 2.Sexf4#
- 1...Bd4
- 2.Sexf4#
- 1...Bf6
- 2.Sexf4#
- 1...Bg7
- 2.Sexf4#
- 1...Bh8
- 2.Sexf4#
- 1...Sa1
- 2.Sb4#
- 1...Se1
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sd4
- 2.Sc3#
- 1...Sb1
- 2.Qb5#
- 1...c3
- 2.Qe4#
- 1...b6
- 2.Qa8#
- 1...Se3!
- 1...cxd3
- 1.Qa5+?
- 1...Sb5
- 2.Qxb5#
- 1...Kc6!
- 1...Sb5
- 1.Ke7?
- Keys
- 1.Bd4!
- 1...Bxd4
- 2.Sexf4#
- 1...Sxd4
- 2.Sc3#
- 1...cxd3
- 2.Sc3#
- 1...Sb5
- 2.Qxb5#
- 1...b5
- 2.Qa8#
- 1...Bf6
- 2.Sdxf4#
- 1...Bg7
- 2.Sdxf4#
- 1...Bh8
- 2.Sdxf4#
- 1...Sa1
- 2.Sb4#
- 1...Se1
- 2.Sb4#
- 1...Se3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sb1
- 2.Qb5#
- 1...c3
- 2.Sxc3#
- 1...b6
- 2.Qa8#
- 1...Bxd4
- 1.Bd4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(f);N_GUARD::S(A),XP(d)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::QAR2(D)
- S(b);N_GUARD::QAR2(D),XS(b)
- P(c);OGATE,XS(B)::QAB1(D)
- P(c);OGATE::QAB1(D)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- P(c);OGATE,XS(B)::QAB1(D)
- S(b);N_GUARD::QAR2(D),XS(b)
- B(f);N_GUARD::S(A),XP(d)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::QAR2(D)
- P(c);OGATE::QAB1(D)
- Refutation
- B(f);CHECK
- Try
- B(E);
- Vars
- P(c);OGATE,XS(B)::QAB1(D)
- S(b);N_GUARD::QAR2(D),XS(b)
- P(h);OGATEB::QAB(D)
- B(f);N_GUARD::S(A),XP(d)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);S_CUTB(f)::S(A)
- S(b);N_GUARD::QAR2(D)
- P(c);OGATE::QAB1(D)
- Refutation
- S(a);
- Try
- B(E);
- Vars
- P(c);OGATE,XS(B)::QAB1(D)
- S(b);N_GUARD::QAR2(D),XS(b)
- P(h);OGATEB::QAB(D)
- B(f);N_GUARD::S(A),XP(d)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);S_CUTB(f)::S(A)
- S(b);N_GUARD::QAR2(D)
- P(c);OGATE::QAB1(D)
- Refutation
- S(a);
- Try
- Q(D);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAR2(D),XS(b)
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- B(E);
- Vars
- B(f);N_GUARD,SBLOCK,XB(E)::S(A),XP(d)
- S(a);SBLOCK,XB(E)::S(A)
- P(c);XS(B)::S(A)
- S(b);N_GUARD::QAR2(D),XS(b)
- P(h);OGATEB::QAB(D)
- B(f);N_GUARD::S(B),XP(d)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::QAR2(D)
- P(c);::S(A),XP(c)
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