MESON Chess Problem Database
Problem Display
PID: 414 (nB2B3/P3p1p1/N2pkbR1/1Q5p/p2P3R/K5n1/8/8 w - - 0 1)
Warton, Joseph John
Warton, Thomas Joseph
The Observer, 1944
(First published on Sun May 14 1944)
#2
9 + 9
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...d5
- 2.Qd7#
- 1...Sf1
- Tries
- 1.Ka2?
- 1...d5
- 2.Qd7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...a3!
- 1...d5
- 1.Kb2?
- 1...d5
- 2.Qd7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...a3+!
- 1...d5
- 1.Kxa4?
- 1...d5
- 2.Qd7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sc7
- 2.Sxc7#
- 1...Sb6+!
- 1...d5
- 1.Kb4?
- 1...d5
- 2.Qd7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...a3!
- 1...d5
- 1.Sb4?
- threat
- 2.Qd7#
- 2.Qd5#
- 1...d5
- 2.Qd7#
- 2.Qxd5#
- 1...Sc7
- 2.Qd7#
- 1...Sb6!
- threat
- 1.Sc5+?
- 1...Kd5
- 2.Bc6#
- 1...dxc5
- 2.Qd7#
- 1...Kf5!
- 1...Kd5
- 1.Bxd6?
- threat
- 2.Qe5#
- 1...Kxd6
- 2.Qc6#
- 2.Qd7#
- 2.Qe5#
- 1...exd6!
- threat
- 1.Bc7?
- 1...Sxc7
- 2.Sxc7#
- 1...d5
- 2.Qd7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sb6!
- 1...Sxc7
- 1.Rf4?
- 1...Sb6
- 2.Sc7#
- 1...Sf1
- 2.Re4#
- 2.Qf5#
- 1...Sh1
- 2.Re4#
- 2.Qf5#
- 1...Se2
- 2.Re4#
- 2.Qf5#
- 1...Se4
- 2.Rxe4#
- 2.Qf5#
- 1...Sf5
- 2.Re4#
- 2.Qxf5#
- 1...Sc7
- 2.Sxc7#
- 1...d5
- 2.Sc5#
- 2.Qc6#
- 2.Qd7#
- 1...h4!
- 1...Sb6
- 1.Rxh5?
- threat
- 2.Qd7#
- 2.Qd5#
- 2.d5#
- 1...Sb6
- 2.Sc7#
- 1...Sf5
- 2.Qxf5#
- 1...Sc7
- 2.Sxc7#
- 2.Qd7#
- 1...d5
- 2.Sc5#
- 2.Re5#
- 2.Qc6#
- 2.Qd7#
- 2.Qxd5#
- 1...Sxh5!
- threat
- 1.Qd3?
- 1...Se4
- 2.Qxe4#
- 1...Sb6
- 2.Sc7#
- 1...Sf1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sf5
- 2.Qe4#
- 1...Sc7
- 2.Sxc7#
- 1...d5
- 2.Sc5#
- 1...Kd5!
- 1...Se4
- 1.Qc4+?
- 1...d5
- 2.Qc8#
- 1...Kf5!
- 1...d5
- 1.Qa5?
- 1...Sb6
- 2.Sc7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sc7
- 2.Sxc7#
- 1...d5!
- 1...Sb6
- 1.Qc5?
- 1...d5
- 2.Qc8#
- 1...Sb6
- 2.Sc7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sf5
- 2.Re4#
- 1...Sc7
- 2.Sxc7#
- 1...dxc5!
- 1...d5
- 1.Qg5?
- threat
- 2.d5#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...d5
- 2.Sc5#
- 2.Qe5#
- 1...Sf5!
- threat
- 1.Ka2?
- Keys
- 1.Qb1!
- 1...Kd5
- 2.Qa2#
- 1...Se4
- 2.Qxe4#
- 1...Sb6
- 2.Sc7#
- 1...Sf1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sf5
- 2.Qe4#
- 1...Sc7
- 2.Sxc7#
- 1...d5
- 2.Sc5#
- 1...Kd5
- 1.Qb1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- P(d);::QAB1(D)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- P(d);::QAB1(D)
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(b);
- Try
- K(A);P_SPINP(B),S_FLIGHT
- Vars
- P(d);::QAB1(D)
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(b);CHECK
- Try
- K(A);P-FLIGHT,XP(b)
- Vars
- P(d);::QAB1(D)
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- S(i);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- P(d);::QAB1(D)
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(b);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(i);::QAB1(D)
- Refutation
- S(i);
- Try
- S(E);CHECK
- Vars
- K(e);N_SPINB(f),S_FLIGHT::B(I)
- P(d);XS(E)::QAB1(D)
- Refutation
- K(e);N_SPINB(f),S_FLIGHT
- Try
- B(H);XP(d)
- Threat
- QAR1(D)
- Refutation
- P(g);XB(H)
- Try
- B(H);
- Vars
- S(i);XB(H)::S(E),XS(i)
- P(d);::QAB1(D)
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- Refutation
- S(i);
- Try
- R(C);
- Vars
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(c);
- Try
- R(C);XP(c)
- Threat
- DUALS(3)
- Vars
- S(i);N_GUARD::S(E)
- S(a);N_GUARD::QAB1(D),XS(a)
- Refutation
- S(a);XR(C)
- Try
- Q(D);
- Vars
- S(a);N_GUARD::QAR2(D),XS(a)
- S(i);N_GUARD::S(E)
- S(a);N_GUARD::QAR2(D)
- S(i);N_GUARD::S(E),XS(i)
- P(d);N_GUARD,SBLOCK::S(E)
- Refutation
- K(e);N_SPINB(f),S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- P(d);P_SPINP(d),SBLOCK::QAB(D)
- Refutation
- K(e);N_SPINB(f),S_FLIGHT
- Try
- Q(D);
- Vars
- S(i);N_GUARD::S(E)
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(d);
- Try
- Q(D);
- Vars
- P(d);SBLOCK::QAB(D)
- S(i);N_GUARD::S(E)
- S(a);N_GUARD::R(C)
- S(a);N_GUARD::R(C),XS(a)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(d);XQ(D)
- Try
- Q(D);
- Threat
- P(B)
- Vars
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- S(a);
- Try
- Actual
- Q(D);
- Vars
- K(e);N_SPINB(f),S_FLIGHT::QAB(D)
- S(a);N_GUARD::QAR2(D),XS(a)
- S(i);N_GUARD::S(E)
- S(a);N_GUARD::QAR2(D)
- S(i);N_GUARD::S(E),XS(i)
- P(d);N_GUARD,SBLOCK::S(E)
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