MESON Chess Problem Database
Problem Display
PID: 184462 (1nK5/8/1b2p3/4P3/1B3R2/3k4/N2P2Q1/N3r3 w - - 0 1)
Evans, TC
The Observer, 1928
(First published on Sun Sep 9 1928)
#2
8 + 5
| 15239 | Valois Notebooks | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rxa1
- 2.Qe4#
- 1...Rb1
- 2.Qe4#
- 1...Rc1+
- 2.Sxc1#
- 1...Rd1
- 2.Qe4#
- 1...Rf1
- 2.Qxf1#
- 2.Qe4#
- 1...Rg1
- 2.Qe4#
- 1...Rh1
- 2.Qe4#
- 1...Re2
- 2.Sc1#
- 1...Re3
- 2.Sc1#
- 1...Re4
- 2.Qxe4#
- 1...Rxe5
- 2.Sc1#
- 1...Rxa1
- Tries
- 1.Qf1+?
- 1...Re2
- 2.Sc1#
- 2.Qb1#
- 1...Rxf1!
- 1...Re2
- 1.Qf3+?
- 1...Re3
- 2.Sc1#
- 1...Be3!
- 1...Re3
- 1.Qh3+?
- 1...Ke2
- 2.Qf3#
- 1...Re3
- 2.Sc1#
- 1...Be3!
- 1...Ke2
- 1.Qd5+?
- 1...Ke2
- 2.Sc3#
- 2.Qf3#
- 1...Bd4
- 2.Qb5#
- 1...exd5!
- 1...Ke2
- 1.Qc6?
- threat
- 2.Qb5#
- 2.Qc4#
- 1...Ke2
- 2.Qf3#
- 1...Rxa1
- 2.Qe4#
- 2.Qc4#
- 1...Rxe5
- 2.Sc1#
- 2.Qc4#
- 1...Re4
- 2.Qxe4#
- 1...Rc1
- 2.Sxc1#
- 1...Bd4
- 2.Qb5#
- 1...Bc5
- 2.Qb5#
- 1...Sxc6!
- threat
- 1.Qe2+?
- 1...Rxe2
- 2.Sc1#
- 1...Kxe2!
- 1...Rxe2
- 1.Qg3+?
- 1...Ke2
- 2.Qf3#
- 1...Re3
- 2.Sc1#
- 1...Be3!
- 1...Ke2
- 1.Qg6+?
- 1...Re4
- 2.Qxe4#
- 1...Ke2!
- 1...Re4
- 1.Qf1+?
- Keys
- 1.Qb7!
- 1...Rc1+
- 2.Sxc1#
- 1...Ke2
- 2.Qf3#
- 1...Rxa1
- 2.Qe4#
- 1...Rxe5
- 2.Sc1#
- 1...Re4
- 2.Qxe4#
- 1...Bd4
- 2.Qb5#
- 1...Be3
- 2.Qb5#
- 1...Rb1
- 2.Qe4#
- 1...Rd1
- 2.Qe4#
- 1...Rf1
- 2.Qe4#
- 1...Rg1
- 2.Qe4#
- 1...Rh1
- 2.Qe4#
- 1...Re2
- 2.Sc1#
- 1...Re3
- 2.Sc1#
- 1...Bg1
- 2.Qb5#
- 1...Bf2
- 2.Qb5#
- 1...Ba5
- 2.Qb5#
- 1...Bc5
- 2.Qb5#
- 1...Ba7
- 2.Qb5#
- 1...Bc7
- 2.Qb5#
- 1...Bd8
- 2.Qb5#
- 1...Sa6
- 2.Qxa6#
- 1...Sc6
- 2.Qa6#
- 1...Sd7
- 2.Qa6#
- 1...Rc1+
- 1.Qb7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 14
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD,XS(A)::QAB1(D)
- R(a);N_GUARD::QAB1(D)
- R(a);CHECK,N_GUARD::S(B),XR(a)
- R(a);N_GUARD::S(B)
- R(a);N_GUARD::QAB1(D),XR(a)
- R(a);N_GUARD,XP(G)::S(B)
- Tries
- Try
- Q(D);CHECK
- Refutation
- R(a);XQ(D)
- Try
- Q(D);CHECK
- Vars
- R(a);P_SPINR(a)::S(B)
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(D);CHECK
- Vars
- K(b);S_FLIGHT::QAB1(D)
- R(a);P_SPINR(a)::S(B)
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(D);CHECK
- Vars
- B(c);P_SPINB(c)::QAB(D)
- Refutation
- P(d);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- K(b);S_FLIGHT::QAB1(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- R(a);N_GUARD,P_PINQ(D)::S(B),XR(a)
- B(c);::QAB(D)
- Refutation
- S(e);XQ(D)
- Try
- Q(D);CHECK
- Vars
- R(a);XQ(D)::S(B)
- Refutation
- K(b);S_FLIGHT,XQ(D)
- Try
- Q(D);CHECK
- Vars
- K(b);S_FLIGHT::QAB1(D)
- R(a);P_SPINR(a)::S(B)
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(D);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(D),XR(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- Q(D);
- Vars
- R(a);CHECK,N_GUARD::S(B),XR(a)
- K(b);S_FLIGHT::QAB1(D)
- R(a);N_GUARD,XS(A)::QAB1(D)
- R(a);N_GUARD,XP(G)::S(B)
- R(a);N_GUARD::QAB1(D),XR(a)
- B(c);OGATE::QAB(D)
- R(a);N_GUARD::QAB1(D)
- R(a);N_GUARD::S(B)
- S(e);N_GUARD::QAB(D),XS(e)
- S(e);N_GUARD::QAB(D)
Developed and maintained by Brian Stephenson.
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