MESON Chess Problem Database
Problem Display
PID: 368 (6n1/p2B4/R1bpP3/P2krN2/1R2N3/2p3Q1/p2r4/K2n4 w - - 0 1)
Warton, Joseph John
Warton, Thomas Joseph
The Observer, 1934
(First published on Sun Jun 17 1934)
#2
9 + 10
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rb2
- 2.Rd4#
- 2.Qd3#
- 1...Rc2
- 2.Rd4#
- 2.Qd3#
- 1...Re2
- 2.Rd4#
- 2.Qd3#
- 1...Rf2
- 2.Rd4#
- 2.Qd3#
- 1...Rg2
- 2.Rd4#
- 2.Qd3#
- 1...Rh2
- 2.Rd4#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Rd4
- 2.Rxd4#
- 1...Rxe4
- 2.Qxd6#
- 1...Rxf5
- 2.Qxd6#
- 1...Rxe6
- 2.Bxc6#
- 1...Ba4
- 2.Rxd6#
- 1...Bb5
- 2.Rxd6#
- 1...Bb7
- 2.Rxd6#
- 1...Bxd7
- 2.Rxd6#
- 1...Ba8
- 2.Rxd6#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...c2
- 2.Qb3#
- 1...Rb2
- Tries
- 1.Bc8?
- 1...Rxe4
- 2.Qxd6#
- 1...Rxf5
- 2.Qxd6#
- 1...Rd4
- 2.Rxd4#
- 1...Bd7
- 2.Rxd6#
- 1...Rb2
- 2.Rd4#
- 2.Qd3#
- 1...Rc2
- 2.Rd4#
- 2.Qd3#
- 1...Re2
- 2.Rd4#
- 2.Qd3#
- 1...Rf2
- 2.Rd4#
- 2.Qd3#
- 1...Rg2
- 2.Rd4#
- 2.Qd3#
- 1...Rh2
- 2.Rd4#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Ba4
- 2.Rxd6#
- 1...Bb5
- 2.Rxd6#
- 1...Bb7
- 2.Rxd6#
- 1...Ba8
- 2.Rxd6#
- 1...Be8
- 2.Rxd6#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...c2
- 2.Qb3#
- 1...Rxe6!
- 1...Rxe4
- 1.Ra4?
- 1...Rxe4
- 2.Qxd6#
- 1...Rxf5
- 2.Qxd6#
- 1...Rxe6
- 2.Bxc6#
- 1...Bxd7
- 2.Rxd6#
- 1...Rd4
- 2.Rxd4#
- 1...Rb2
- 2.Rd4#
- 2.Qd3#
- 1...Rc2
- 2.Rd4#
- 2.Qd3#
- 1...Re2
- 2.Rd4#
- 2.Qd3#
- 1...Rf2
- 2.Rd4#
- 2.Qd3#
- 1...Rg2
- 2.Rd4#
- 2.Qd3#
- 1...Rh2
- 2.Rd4#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Bb5
- 2.Rxd6#
- 1...Bb7
- 2.Rxd6#
- 1...Ba8
- 2.Rxd6#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...c2
- 2.Qb3#
- 1...Bxa4!
- 1...Rxe4
- 1.Rxc6?
- threat
- 2.Rxd6#
- 1...Rxe4
- 2.Rb5#
- 2.Qxd6#
- 1...Rd4
- 2.Rxd4#
- 1...Rxe6!
- threat
- 1.Qf4?
- 1...Rxe4
- 2.Qxd6#
- 1...Rxf5
- 2.Qxd6#
- 2.Qxf5#
- 1...Rxe6
- 2.Bxc6#
- 1...Bxd7
- 2.Rxd6#
- 1...Rb2
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Re2
- 2.Rd4#
- 1...Rf2
- 2.Rd4#
- 1...Rg2
- 2.Rd4#
- 1...Rh2
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Ba4
- 2.Rxd6#
- 1...Bb5
- 2.Rxd6#
- 1...Bb7
- 2.Rxd6#
- 1...Ba8
- 2.Rxd6#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...c2
- 2.Qxd2#
- 1...Rd3!
- 1...Rxe4
- 1.Qg5?
- 1...Rxe4
- 2.Se3#
- 2.Se7#
- 1...Rxf5
- 2.Qxf5#
- 1...Rxe6
- 2.Se3#
- 2.Se7#
- 1...Bxd7
- 2.Rxd6#
- 1...Rd4
- 2.Rxd4#
- 1...Rb2
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Re2
- 2.Rd4#
- 1...Rf2
- 2.Rd4#
- 1...Rg2
- 2.Rd4#
- 1...Rh2
- 2.Rd4#
- 1...Ba4
- 2.Rxd6#
- 1...Bb5
- 2.Rxd6#
- 1...Bb7
- 2.Rxd6#
- 1...Ba8
- 2.Rxd6#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...c2
- 2.Qxd2#
- 1...Rd3!
- 1...Rxe4
- 1.Qg6?
- threat
- 2.Bxc6#
- 1...Rxf5
- 2.Qxf5#
- 1...Rxe6
- 2.Qxe6#
- 1...Bxd7
- 2.Rxd6#
- 1...Ba4
- 2.Rxd6#
- 1...Bb5
- 2.Rxd6#
- 1...Bb7
- 2.Rxd6#
- 1...Ba8
- 2.Rxd6#
- 1...Sf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rxe4!
- threat
- 1.Bc8?
- Keys
- 1.Qh2!
- 1...Rxh2
- 2.Rd4#
- 1...Rxe4
- 2.Qxd6#
- 1...Rxf5
- 2.Qxd6#
- 1...Rxe6
- 2.Bxc6#
- 1...Bxd7
- 2.Rxd6#
- 1...Rd4
- 2.Rxd4#
- 1...Rb2
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Re2
- 2.Rd4#
- 1...Rf2
- 2.Rd4#
- 1...Rg2
- 2.Rd4#
- 1...Rd3
- 2.Qxa2#
- 1...Ba4
- 2.Rxd6#
- 1...Bb5
- 2.Rxd6#
- 1...Bb7
- 2.Rxd6#
- 1...Ba8
- 2.Rxd6#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...c2
- 2.Qxd2#
- 1...Rxh2
- 1.Qh2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::QAR2(B),XR(c)
- R(c);N_GUARD::R1(C),XR(c)
- R(f);OGATE,XS(D)::QAR1(B),XP(h)
- R(f);OGATE,XS(F)::QAR1(B),XP(h)
- R(f);SBLOCK,XP(H)::B(I),XB(g)
- B(g);OGATE::R1(G),XP(h)
- B(g);OGATE,XB(I)::R1(G),XP(h)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(d);OGATE::QAB(B)
- Tries
- Try
- B(I);
- Vars
- R(f);OGATE,XS(D)::QAR1(B),XP(h)
- R(f);OGATE,XS(F)::QAR1(B),XP(h)
- R(c);N_GUARD::R1(C),XR(c)
- B(g);OGATE::R1(G),XP(h)
- R(c);N_GUARD::QAR2(B),XR(c)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(d);OGATE::QAB(B)
- Refutation
- R(f);XP(H)
- Try
- R(C);
- Vars
- R(f);OGATE,XS(D)::QAR1(B),XP(h)
- R(f);OGATE,XS(F)::QAR1(B),XP(h)
- R(f);SBLOCK,XP(H)::B(I),XB(g)
- B(g);OGATE,XB(I)::R1(G),XP(h)
- R(c);N_GUARD::R1(C),XR(c)
- R(c);N_GUARD::QAR2(B),XR(c)
- B(g);OGATE::R1(G),XP(h)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(d);OGATE::QAB(B)
- Refutation
- B(g);XR(C)
- Try
- R(G);XB(g)
- Threat
- R1(G),XP(h)
- Vars
- R(c);N_GUARD::R1(C),XR(c)
- Refutation
- R(f);XP(H)
- Try
- Q(B);
- Vars
- R(f);OGATE,XS(D)::QAR1(B),XP(h)
- R(f);SBLOCK,XP(H)::B(I),XB(g)
- B(g);OGATE,XB(I)::R1(G),XP(h)
- R(c);N_GUARD::R1(C)
- R(c);N_GUARD::R1(C),XR(c)
- B(g);OGATE::R1(G),XP(h)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(d);N_GUARD::QAR(B),XR(c)
- Refutation
- R(c);
- Try
- Q(B);
- Vars
- R(f);OGATE,P_SPINR(f),XS(F)::QAR2(B),XR(f)
- B(g);OGATE,XB(I)::R1(G),XP(h)
- R(c);N_GUARD::R1(C),XR(c)
- R(c);N_GUARD::R1(C)
- B(g);OGATE::R1(G),XP(h)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(d);N_GUARD::QAR(B),XR(c)
- Refutation
- R(c);
- Try
- Q(B);
- Threat
- B(I),XB(g)
- Vars
- R(f);OGATE,XS(F)::QAR2(B),XR(f)
- R(f);OGATE,XP(H)::QAB1(B),XR(f)
- B(g);OGATE,XB(I)::R1(G),XP(h)
- B(g);OGATE::R1(G),XP(h)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- Refutation
- R(f);XS(D)
- Try
- Actual
- Q(B);
- Vars
- R(c);N_GUARD,XQ(B)::R1(C)
- R(f);OGATE,XS(D)::QAR1(B),XP(h)
- R(f);OGATE,XS(F)::QAR1(B),XP(h)
- R(f);SBLOCK,XP(H)::B(I),XB(g)
- B(g);OGATE,XB(I)::R1(G),XP(h)
- R(c);N_GUARD::R1(C),XR(c)
- R(c);N_GUARD::R1(C)
- R(c);OGATE::QAB(B),XP(b)
- B(g);OGATE::R1(G),XP(h)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(d);N_GUARD::QAR(B),XR(c)
Developed and maintained by Brian Stephenson.
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