MESON Chess Problem Database
Problem Display
PID: 195263 (4N3/1n3r2/4R3/2Bk1Pn1/N2P4/1r1Pp3/4B1K1/8 w - - 0 1)
Webster, LJ
The Observer, 1941
(First published on Sun Dec 7 1941)
#2
9 + 6
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sc3#
- 1...Rb2
- 2.Sc3#
- 1...Ra3
- 2.Sb6#
- 1...Rc3
- 2.Sxc3#
- 2.Sb6#
- 1...Rxd3
- 2.Sb6#
- 1...Rb4
- 2.Sc3#
- 1...Rb5
- 2.Sc3#
- 1...Rb6
- 2.Sc3#
- 2.Sxb6#
- 1...Rxf5
- 2.Sc7#
- 1...Rf6
- 2.Sxf6#
- 2.Sc7#
- 1...Rc7
- 2.Sf6#
- 2.Sxc7#
- 1...Rd7
- 2.Sf6#
- 1...Re7
- 2.Sf6#
- 1...Rg7
- 2.Sf6#
- 1...Rh7
- 2.Sf6#
- 1...Rf8
- 2.Sc7#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Se4
- 2.dxe4#
- 1...Sxe6
- 2.Bf3#
- 1...Sh7
- 2.Bf3#
- 1...Sa5
- 2.Rd6#
- 1...Sxc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sd8
- 2.Rd6#
- 1...Rb1
- Tries
- 1.Kh2?
- 1...Sf3+
- 2.Bxf3#
- 1...Rxd3
- 2.Sb6#
- 1...Rxf5
- 2.Sc7#
- 1...Sxe6
- 2.Bf3#
- 1...Sxc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Rb1
- 2.Sc3#
- 1...Rb2
- 2.Sc3#
- 1...Ra3
- 2.Sb6#
- 1...Rc3
- 2.Sxc3#
- 2.Sb6#
- 1...Rb4
- 2.Sc3#
- 1...Rb5
- 2.Sc3#
- 1...Rb6
- 2.Sc3#
- 2.Sxb6#
- 1...Rf6
- 2.Sxf6#
- 2.Sc7#
- 1...Rc7
- 2.Sf6#
- 2.Sxc7#
- 1...Rd7
- 2.Sf6#
- 1...Re7
- 2.Sf6#
- 1...Rg7
- 2.Sf6#
- 1...Rf8
- 2.Sc7#
- 1...Sh3
- 2.Bf3#
- 1...Se4
- 2.dxe4#
- 1...Sh7
- 2.Bf3#
- 1...Sa5
- 2.Rd6#
- 1...Sd8
- 2.Rd6#
- 1...Rh7+!
- 1...Sf3+
- 1.Bd1?
- threat
- 2.Bxb3#
- 1...Rxd3
- 2.Sb6#
- 1...Sxe6
- 2.Bf3#
- 1...Sxc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Rb1
- 2.Sc3#
- 1...Ra3
- 2.Sb6#
- 1...Rc3
- 2.Sxc3#
- 2.Sb6#
- 1...Rb4
- 2.Sc3#
- 1...Rb5
- 2.Sc3#
- 1...Rb6
- 2.Sc3#
- 2.Sxb6#
- 1...Sa5
- 2.Rd6#
- 1...Rb2+!
- threat
- 1.Bf3+?
- 1...Se4
- 2.Bxe4#
- 1...Sxf3!
- 1...Se4
- 1.Kh2?
- Keys
- 1.Kg3!
- 1...Se4+
- 2.dxe4#
- 1...Rxd3
- 2.Sb6#
- 1...Rxf5
- 2.Sc7#
- 1...Sxe6
- 2.Bf3#
- 1...Sxc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Rb1
- 2.Sc3#
- 1...Rb2
- 2.Sc3#
- 1...Ra3
- 2.Sb6#
- 1...Rc3
- 2.Sxc3#
- 2.Sb6#
- 1...Rb4
- 2.Sc3#
- 1...Rb5
- 2.Sc3#
- 1...Rb6
- 2.Sc3#
- 2.Sxb6#
- 1...Rf6
- 2.Sxf6#
- 2.Sc7#
- 1...Rc7
- 2.Sf6#
- 2.Sxc7#
- 1...Rd7
- 2.Sf6#
- 1...Re7
- 2.Sf6#
- 1...Rg7
- 2.Sf6#
- 1...Rh7
- 2.Sf6#
- 1...Rf8
- 2.Sc7#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Sh7
- 2.Bf3#
- 1...Sa5
- 2.Rd6#
- 1...Sd8
- 2.Rd6#
- 1...Se4+
- 1.Kg3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(D)
- R(a);N_GUARD,P_PINB(A)::S(D)
- R(a);N_GUARD,XP(C)::S(D)
- R(f);N_GUARD,XP(G)::S(I)
- R(f);N_GUARD::S(I)
- S(d);N_GUARD::B(A),XS(d)
- S(d);N_GUARD::B(A)
- S(d);OGATE::P(C),XS(d)
- S(d);N_GUARD,XR(H)::B(A)
- S(e);N_GUARD::R1(H)
- S(e);N_GUARD,XB(F)::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- S(d);CHECK,N_GUARD::B(A),XS(d)
- R(a);N_GUARD,XP(C)::S(D)
- R(f);N_GUARD,XP(G)::S(I)
- S(d);N_GUARD,XR(H)::B(A)
- S(e);N_GUARD,XB(F)::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD,P_PINB(A)::S(D)
- R(f);N_GUARD::S(I)
- S(d);N_GUARD::B(A)
- S(d);OGATE::P(C),XS(d)
- S(e);N_GUARD::R1(H)
- Refutation
- R(f);CHECK
- Try
- B(A);
- Threat
- B(A),XR(a)
- Vars
- R(a);N_GUARD,XP(C)::S(D)
- S(d);N_GUARD,XR(H)::B(A)
- S(e);N_GUARD,XB(F)::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::R1(H)
- Refutation
- R(a);CHECK
- Try
- B(A);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::B(A),XS(d)
- Refutation
- S(d);XB(A)
- Try
- Actual
- K(B);P-FLIGHT
- Vars
- S(d);CHECK,OGATE::P(C),XS(d)
- R(a);N_GUARD,XP(C)::S(D)
- R(f);N_GUARD,XP(G)::S(I)
- S(d);N_GUARD,XR(H)::B(A)
- S(e);N_GUARD,XB(F)::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- R(a);N_GUARD::S(D)
- R(f);N_GUARD::S(I)
- S(d);N_GUARD::B(A),XS(d)
- S(d);N_GUARD::B(A)
- S(e);N_GUARD::R1(H)
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