MESON Chess Problem Database
Problem Display
PID: 2985 (1K6/4p3/4B3/1n6/kP6/b3p3/Nn2N3/4Q3 w - - 0 1)
Williams, Philip Hamilton
Source?, 1915
#2
6 + 6
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bxb4
- 2.Qxb4#
- 1...Sd1
- 2.Qxd1#
- 1...Sd3
- 2.Qd1#
- 1...Sc4
- 2.Qd1#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Bxb4
- Tries
- 1.Kb7?
- 1...Bxb4
- 2.Qxb4#
- 1...Sc4
- 2.Qd1#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Sd1
- 2.Qxd1#
- 1...Sd3
- 2.Qd1#
- 1...Sd6+!
- 1...Bxb4
- 1.Ka8?
- 1...Bxb4
- 2.Qxb4#
- 1...Sc4
- 2.Qd1#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sd1
- 2.Qxd1#
- 1...Sd3
- 2.Qd1#
- 1...Sc7+!
- 1...Bxb4
- 1.Sd4?
- threat
- 2.Bb3#
- 1...Bxb4
- 2.Qxb4#
- 1...Sc4
- 2.Qd1#
- 1...Sxd4!
- threat
- 1.Qd2?
- threat
- 2.Qc2#
- 1...Bxb4
- 2.Qxb4#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...exd2!
- threat
- 1.Qb1?
- threat
- 2.Qc2#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Bxb4!
- threat
- 1.Qc1?
- threat
- 2.Qc2#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Bxb4!
- threat
- 1.Qf1?
- 1...Sc4
- 2.Qd1#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Sd1
- 2.Qxd1#
- 1...Sd3
- 2.Qd1#
- 1...Bxb4!
- 1...Sc4
- 1.Qg1?
- 1...Sc4
- 2.Qd1#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Sd1
- 2.Qxd1#
- 1...Sd3
- 2.Qd1#
- 1...Bxb4!
- 1...Sc4
- 1.Qh1?
- 1...Sc4
- 2.Qd1#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Sd1
- 2.Qxd1#
- 1...Sd3
- 2.Qd1#
- 1...Bxb4!
- 1...Sc4
- 1.Kb7?
- Keys
- 1.Qa1!
- 1...Bxb4
- 2.Sac3#
- 1...Sc4
- 2.Qd1#
- 1...Sc3
- 2.Sexc3#
- 1...Sd4
- 2.Sec3#
- 1...Sd6
- 2.Sec3#
- 1...Sa7
- 2.Sec3#
- 1...Sc7
- 2.Sec3#
- 1...Sd1
- 2.Qxd1#
- 1...Sd3
- 2.Qd1#
- 1...Bxb4
- 1.Qa1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(a);N_GUARD::QAB(A),XS(a)
- S(a);N_GUARD::QAB(A)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(a);N_GUARD::QAB(A)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(e);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(a);N_GUARD::QAB(A)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(e);CHECK
- Try
- S(C);
- Threat
- B(E)
- Vars
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(a);N_GUARD::QAB(A)
- Refutation
- S(e);XS(C)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- Refutation
- P(c);XQ(A)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- Refutation
- B(b);XP(D)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- Refutation
- B(b);XP(D)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAB(A)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- B(b);XP(D)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAB(A)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- B(b);XP(D)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAB(A)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- B(b);XP(D)
- Try
- Actual
- Q(A);
- Vars
- B(b);SBLOCK,XP(D)::QAR(A)+S(B),DCHECK
- S(a);N_GUARD::QAB(A)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(a);N_GUARD::QAB(A),XS(a)
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