MESON Chess Problem Database
Problem Display
PID: 200602 (8/3p4/p1pP2K1/P3pN1p/2P1kpnR/1Q5p/1N5B/4n3 w - - 0 1)
Anderson, Martin (England)
The Observer, 1948
(First published on Sun Apr 11 1948)
#2
9 + 10
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qc2#
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sxh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...f3
- 2.Qe3#
- 1...c5
- 2.Qb7#
- 1...Sc2
- Tries
- 1.Kg5?
- 1...Sxh2
- 2.Qe3#
- 1...Sd3
- 2.Qxd3#
- 1...Se3
- 2.Qxe3#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...f3
- 2.Qe3#
- 1...c5
- 2.Qb7#
- 1...Sf3+!
- 1...Sxh2
- 1.Sa4?
- threat
- 2.Sc5#
- 1...Se3
- 2.Qxe3#
- 1...c5
- 2.Sxc5#
- 1...Sd3!
- threat
- 1.Bg1?
- 1...Sd3
- 2.Qxd3#
- 1...Se3
- 2.Qxe3#
- 1...f3
- 2.Qe3#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sf3
- 2.Qc2#
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Sg3#
- 2.Qe3#
- 1...Sf6
- 2.Sg3#
- 2.Qe3#
- 1...Sh6
- 2.Sg3#
- 2.Qe3#
- 1...c5
- 2.Qb7#
- 1...h2!
- 1...Sd3
- 1.Bg3?
- 1...fxg3
- 2.Qe3#
- 1...Sd3
- 2.Qxd3#
- 1...Se3
- 2.Qxe3#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sf3
- 2.Qc2#
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...f3
- 2.Qe3#
- 1...c5
- 2.Qb7#
- 1...h2!
- 1...fxg3
- 1.Rxg4?
- threat
- 2.Qe3#
- 1...Sd3
- 2.Qxd3#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...hxg4!
- threat
- 1.Qc2+?
- 1...Kf3
- 2.Rxh3#
- 1...Sd3
- 2.Qxd3#
- 1...Sxc2!
- 1...Kf3
- 1.Qa3?
- 1...Sxh2
- 2.Qe3#
- 1...Sd3
- 2.Qxd3#
- 1...Se3
- 2.Qxe3#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sf3
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...f3
- 2.Qe3#
- 1...c5!
- 1...Sxh2
- 1.Qc3?
- 1...Sxh2
- 2.Sg3#
- 2.Qe3#
- 1...Sd3
- 2.Qxd3#
- 1...Se3
- 2.Qxe3#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sf3
- 2.Qc2#
- 2.Qd3#
- 1...Sf2
- 2.Sg3#
- 2.Qe3#
- 1...Sf6
- 2.Sg3#
- 2.Qe3#
- 1...Sh6
- 2.Sg3#
- 2.Qe3#
- 1...f3
- 2.Qxe1#
- 2.Qxe5#
- 2.Qe3#
- 1...c5!
- 1...Sxh2
- 1.Kg5?
- Keys
- 1.Qd1!
- 1...Sxh2
- 2.Qe2#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qc2#
- 2.Qb1#
- 2.Qd3#
- 1...Sf2
- 2.Qe2#
- 1...Se3
- 2.Sg3#
- 1...Sf6
- 2.Qe2#
- 1...Sh6
- 2.Qe2#
- 1...f3
- 2.Qxe1#
- 1...c5
- 2.Qd5#
- 1...Sxh2
- 1.Qd1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C)
- S(e);N_GUARD,P_SPINP(d),XB(B)::QAR1(C)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C),XS(e)
- P(d);N_GUARD,P_SPINS(e)::QAR1(C)
- P(i);OGATEB::QAB(C)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- S(e);N_GUARD,P_SPINP(d),XB(B)::QAR1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C),XS(e)
- S(a);N_GUARD::QAB1(C)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C)
- P(d);N_GUARD,P_SPINS(e)::QAR1(C)
- P(i);OGATEB::QAB(C)
- Refutation
- S(a);CHECK
- Try
- S(A);
- Threat
- S(A)
- Vars
- S(e);N_GUARD,P_SPINP(d)::QAR1(C),XS(e)
- P(i);::S(A),XP(i)
- Refutation
- S(a);
- Try
- B(B);
- Vars
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C),XS(e)
- P(d);N_GUARD,P_SPINS(e)::QAR1(C)
- S(a);N_GUARD::QAB1(C)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C)
- P(i);OGATEB::QAB(C)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- P(d);N_GUARD,P_SPINS(e),XB(B)::QAR1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C),XS(e)
- S(a);N_GUARD::QAB1(C)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C)
- P(d);N_GUARD,P_SPINS(e)::QAR1(C)
- P(i);OGATEB::QAB(C)
- Refutation
- P(b);
- Try
- R(E);P_PINP(d),XS(e)
- Threat
- QAR1(C)
- Vars
- S(a);N_GUARD::QAB1(C),XS(a)
- S(a);N_GUARD::QAB1(C)
- Refutation
- P(g);N_SPINP(d),XR(E)
- Try
- Q(C);CHECK
- Vars
- K(c);S_FLIGHT::R(E),XP(b)
- S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
- Refutation
- S(a);XQ(C)
- Try
- Q(C);
- Vars
- S(e);N_GUARD,P_SPINP(d),XB(B)::QAR1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C),XS(e)
- S(a);N_GUARD::QAB1(C)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C)
- P(d);N_GUARD,P_SPINS(e)::QAR1(C)
- Refutation
- P(i);
- Try
- Q(C);
- Vars
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD,P_SPINP(d)::QAR1(C),XS(e)
- S(a);N_GUARD::QAB1(C)
- Refutation
- P(i);
- Try
- Actual
- Q(C);
- Vars
- S(e);N_GUARD,P_SPINP(d),XB(B)::QAR2(C)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD,P_SPINP(d)::QAR2(C)
- S(e);P_SPINP(d),SBLOCK::S(G)
- P(d);P_SPINS(e),SBLOCK::QAR(C),XS(a)
- P(i);N_GUARD::QAB1(C)
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