MESON Chess Problem Database
Problem Display
PID: 20984 (8/p3p3/R7/p2k4/B1pbN1N1/1pP3K1/1Pn5/3Q4 w - - 0 1)
Mansfield, Comins
Chess Amateur (The), 1915
#2
8 + 8
| 2681 | All Change Here! | 1919 |
| 1577 | Jaarboek | 1933 |
| 4797 | A Genius of the Two-mover | 1936 |
| 3202 | Complete Mansfield/I | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Qf3#
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sgf6#
- 1...e6
- 2.Bc6#
- 1...Kxe4
- Tries
- 1.Kh2?
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sgf6#
- 1...e6
- 2.Bc6#
- 1...Kxe4!
- 1...Sa1
- 1.Kf3?
- 1...Sa1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sgf6#
- 2.Rd6#
- 1...e6
- 2.Bc6#
- 2.Rxa5#
- 2.Rd6#
- 1...Se1+!
- 1...Sa1
- 1.Kh3?
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sgf6#
- 1...e6
- 2.Bc6#
- 1...Kxe4!
- 1...Sa1
- 1.Kf4?
- 1...Sa1
- 2.Se3#
- 2.Qxd4#
- 1...Se1
- 2.Se3#
- 2.Qxd4#
- 1...Sa3
- 2.Se3#
- 2.Qxd4#
- 1...Se3
- 2.Sxe3#
- 2.Qxd4#
- 1...Sb4
- 2.Se3#
- 2.Qxd4#
- 1...e6
- 2.Sgf6#
- 2.Bc6#
- 2.Rxa5#
- 2.Rd6#
- 1...e5+!
- 1...Sa1
- 1.Kh4?
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sgf6#
- 1...e6
- 2.Bc6#
- 1...Kxe4!
- 1...Sa1
- 1.Sef6+?
- 1...Kc5
- 2.Rc6#
- 1...exf6!
- 1...Kc5
- 1.Sgf6+?
- 1...Ke5
- 2.Qh5#
- 1...exf6!
- 1...Ke5
- 1.Bb5?
- 1...Kxe4
- 2.Qf3#
- 1...e5
- 2.Sgf6#
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e6
- 2.Bc6#
- 1...a4!
- 1...Kxe4
- 1.Bd7?
- 1...Kxe4
- 2.Qf3#
- 1...e5
- 2.Sgf6#
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e6
- 2.Bc6#
- 1...a4!
- 1...Kxe4
- 1.Be8?
- 1...Kxe4
- 2.Qf3#
- 1...e5
- 2.Sgf6#
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e6
- 2.Bc6#
- 1...a4!
- 1...Kxe4
- 1.Rxa5+?
- 1...Kxe4
- 2.Bc6#
- 2.Qf3#
- 1...Ke6!
- 1...Kxe4
- 1.Rc6?
- 1...Kxe4
- 2.Qf3#
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sef6#
- 2.Sgf6#
- 1...e6
- 2.Sef6#
- 1...a6!
- 1...Kxe4
- 1.Rd6+?
- 1...Kxe4
- 2.Qf3#
- 1...exd6!
- 1...Kxe4
- 1.Rg6?
- threat
- 2.Bc6#
- 1...Kxe4
- 2.Qf3#
- 1...Sb4
- 2.Qxd4#
- 1...e6!
- threat
- 1.Rh6?
- threat
- 2.Bc6#
- 1...Kxe4
- 2.Qf3#
- 1...Sb4
- 2.Qxd4#
- 1...e6!
- threat
- 1.Qd2?
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sgf6#
- 1...e6
- 2.Bc6#
- 1...Kxe4!
- 1...Sa1
- 1.Qd3?
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e5
- 2.Sgf6#
- 2.Rd6#
- 1...e6
- 2.Bc6#
- 2.Rxa5#
- 2.Rd6#
- 1...cxd3!
- 1...Sa1
- 1.Kh2?
- Keys
- 1.Sgf2!
- 1...Ke5
- 2.Qh5#
- 1...e5
- 2.Rd6#
- 1...Sa1
- 2.Qxd4#
- 1...Se1
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...e6
- 2.Rxa5#
- 1...Ke5
- 1.Sgf2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(f);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB1(A)
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);N_GUARD,SBLOCK::S(G)
- P(h);SBLOCK::B(E)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);N_GUARD,SBLOCK::S(G)
- P(h);SBLOCK::B(E)
- Refutation
- K(f);N_SPINB(d),S_FLIGHT,XS(F)
- Try
- K(D);P-FLIGHT
- Vars
- S(a);N_GUARD::QAR1(A),XB(d)
- Refutation
- S(a);CHECK
- Try
- K(D);P-FLIGHT
- Vars
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);N_GUARD,SBLOCK::S(G)
- P(h);SBLOCK::B(E)
- Refutation
- K(f);N_SPINB(d),S_FLIGHT,XS(F)
- Try
- K(D);S_FLIGHT
- Refutation
- P(h);CHECK
- Try
- K(D);S_FLIGHT
- Vars
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);N_GUARD,SBLOCK::S(G)
- P(h);SBLOCK::B(E)
- Refutation
- K(f);N_SPINB(d),S_FLIGHT,XS(F)
- Try
- S(F);CHECK
- Vars
- K(f);N_SPINB(d),P-FLIGHT::R1(H)
- Refutation
- P(h);XS(F)
- Try
- S(G);CHECK
- Vars
- K(f);N_SPINB(d),P-FLIGHT::QAR(A)
- Refutation
- P(h);XS(G)
- Try
- B(E);
- Vars
- K(f);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB1(A)
- P(h);N_GUARD,SBLOCK::S(G)
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);SBLOCK::B(E)
- Refutation
- P(e);
- Try
- B(E);
- Vars
- K(f);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB1(A)
- P(h);N_GUARD,SBLOCK::S(G)
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);SBLOCK::B(E)
- Refutation
- P(e);
- Try
- B(E);
- Vars
- K(f);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB1(A)
- P(h);N_GUARD,SBLOCK::S(G)
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);SBLOCK::B(E)
- Refutation
- P(e);
- Try
- R(H);CHECK,XP(e)
- Refutation
- K(f);N_SPINB(d),S_FLIGHT
- Try
- R(H);
- Vars
- K(f);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB1(A)
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);N_GUARD::S(F)
- Refutation
- P(g);
- Try
- R(H);CHECK
- Vars
- K(f);N_SPINB(d),S_FLIGHT,XS(F)::QAB1(A)
- Refutation
- P(h);XR(H)
- Try
- R(H);
- Threat
- B(E)
- Vars
- K(f);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB1(A)
- S(a);N_GUARD::QAR1(A),XB(d)
- Refutation
- P(h);
- Try
- R(H);
- Threat
- B(E)
- Vars
- K(f);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB1(A)
- S(a);N_GUARD::QAR1(A),XB(d)
- Refutation
- P(h);
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);N_GUARD,SBLOCK::S(G)
- P(h);SBLOCK::B(E)
- Refutation
- K(f);N_SPINB(d),S_FLIGHT,XS(F)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A),XB(d)
- Refutation
- P(c);N_SPINB(d),XQ(A)
- Try
- Actual
- S(G);
- Vars
- K(f);N_SPINB(d),P-FLIGHT::QAR(A)
- P(h);N_GUARD,SBLOCK::R1(H)
- S(a);N_GUARD::QAR1(A),XB(d)
- P(h);SBLOCK::R(H),XP(e)
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