MESON Chess Problem Database
Problem Display
PID: 267971 (6B1/pr6/2bp4/R7/p7/2BkPpN1/Np1P4/1nRK4 w - - 0 1)
Hallam, LC
The Referee, 1928
(First published on Sun Aug 26 1928)
#2
9 + 9
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Sxb4#
- 1...Rc7
- 2.Sb4#
- 1...Rd7
- 2.Sb4#
- 1...Re7
- 2.Sb4#
- 1...Rg7
- 2.Sb4#
- 1...Rh7
- 2.Sb4#
- 1...Bb5
- 2.Sb4#
- 1...Sxc3+
- 2.Rxc3#
- 1...bxc1Q+
- 2.Sxc1#
- 1...bxc1S
- 2.Sxc1#
- 1...bxc1B
- 2.Sxc1#
- 1...bxc1R+
- 2.Sxc1#
- 1...Rb4
- Tries
- 1.Bxb2?
- threat
- 2.Bc4#
- 1...Sc3+
- 2.Rxc3#
- 1...Sxd2
- 2.Rc3#
- 1...Rb4
- 2.Sxb4#
- 1...Rf7
- 2.Sb4#
- 1...Bb5
- 2.Sb4#
- 1...Bd5
- 2.Rxd5#
- 1...Sa3
- 2.Rc3#
- 1...d5!
- threat
- 1.Be5?
- threat
- 2.Bc4#
- 1...Sc3+
- 2.Rxc3#
- 1...bxc1Q+
- 2.Sxc1#
- 1...bxc1R+
- 2.Sxc1#
- 1...Sxd2
- 2.Rc3#
- 1...bxc1S
- 2.Sxc1#
- 1...bxc1B
- 2.Sxc1#
- 1...Rb4
- 2.Sxb4#
- 1...Rf7
- 2.Sb4#
- 1...Bb5
- 2.Sb4#
- 1...Bd5
- 2.Rxd5#
- 1...Sa3
- 2.Rc3#
- 1...d5!
- threat
- 1.Bf6?
- threat
- 2.Bc4#
- 1...Sc3+
- 2.Rxc3#
- 1...bxc1Q+
- 2.Sxc1#
- 1...bxc1R+
- 2.Sxc1#
- 1...Sxd2
- 2.Rc3#
- 1...bxc1S
- 2.Sxc1#
- 1...bxc1B
- 2.Sxc1#
- 1...Rb4
- 2.Sxb4#
- 1...Rf7
- 2.Sb4#
- 1...Bb5
- 2.Sb4#
- 1...Bd5
- 2.Rxd5#
- 1...Sa3
- 2.Rc3#
- 1...d5!
- threat
- 1.Bh8?
- threat
- 2.Bc4#
- 1...Sc3+
- 2.Rxc3#
- 1...bxc1Q+
- 2.Sxc1#
- 1...bxc1R+
- 2.Sxc1#
- 1...Sxd2
- 2.Rc3#
- 1...bxc1S
- 2.Sxc1#
- 1...bxc1B
- 2.Sxc1#
- 1...Rb4
- 2.Sxb4#
- 1...Rf7
- 2.Sb4#
- 1...Bb5
- 2.Sb4#
- 1...Bd5
- 2.Rxd5#
- 1...Sa3
- 2.Rc3#
- 1...d5!
- threat
- 1.Bxb2?
- Keys
- 1.Bg7!
- threat
- 2.Bc4#
- 1...Sc3+
- 2.Rxc3#
- 1...bxc1Q+
- 2.Sxc1#
- 1...bxc1R+
- 2.Sxc1#
- 1...Sxd2
- 2.Rc3#
- 1...bxc1S
- 2.Sxc1#
- 1...bxc1B
- 2.Sxc1#
- 1...d5
- 2.Bh7#
- 1...Rb4
- 2.Sxb4#
- 1...Rf7
- 2.Sb4#
- 1...Bb5
- 2.Sb4#
- 2.Bh7#
- 1...Bd5
- 2.Rxd5#
- 1...Sa3
- 2.Rc3#
- threat
- 1.Bg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD::S(C)
- B(f);S_CUTR(i)::S(C)
- S(a);CHECK,OGATE,XB(E)::R1(A),XS(a)
- P(b);CHECK,XR(A)::S(C),XQ(b)
- P(b);XR(A)::S(C),XS(b)
- P(b);XR(A)::S(C),XB(b)
- P(b);CHECK,XR(A)::S(C),XR(b)
- Tries
- Try
- B(E);XP(b)
- Threat
- B(I)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);N_GUARD,XP(D)::R1(A)
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD::S(C)
- B(f);S_CUTR(i)::S(C)
- B(f);N_GUARD::R(H),XB(f)
- S(a);N_GUARD::R1(A)
- Refutation
- P(g);
- Try
- B(E);
- Threat
- B(I)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- P(b);CHECK,XR(A)::S(C),XQ(b)
- P(b);CHECK,XR(A)::S(C),XR(b)
- S(a);N_GUARD,XP(D)::R1(A)
- P(b);XR(A)::S(C),XS(b)
- P(b);XR(A)::S(C),XB(b)
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD::S(C)
- B(f);S_CUTR(i)::S(C)
- B(f);N_GUARD::R(H),XB(f)
- S(a);N_GUARD::R1(A)
- Refutation
- P(g);
- Try
- B(E);
- Threat
- B(I)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- P(b);CHECK,XR(A)::S(C),XQ(b)
- P(b);CHECK,XR(A)::S(C),XR(b)
- S(a);N_GUARD,XP(D)::R1(A)
- P(b);XR(A)::S(C),XS(b)
- P(b);XR(A)::S(C),XB(b)
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD::S(C)
- B(f);S_CUTR(i)::S(C)
- B(f);N_GUARD::R(H),XB(f)
- S(a);N_GUARD::R1(A)
- Refutation
- P(g);
- Try
- B(E);
- Threat
- B(I)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- P(b);CHECK,XR(A)::S(C),XQ(b)
- P(b);CHECK,XR(A)::S(C),XR(b)
- S(a);N_GUARD,XP(D)::R1(A)
- P(b);XR(A)::S(C),XS(b)
- P(b);XR(A)::S(C),XB(b)
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD::S(C)
- B(f);S_CUTR(i)::S(C)
- B(f);N_GUARD::R(H),XB(f)
- S(a);N_GUARD::R1(A)
- Refutation
- P(g);
- Try
- Actual
- B(E);
- Threat
- B(I)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- P(b);CHECK,XR(A)::S(C),XQ(b)
- P(b);CHECK,XR(A)::S(C),XR(b)
- S(a);N_GUARD,XP(D)::R1(A)
- P(b);XR(A)::S(C),XS(b)
- P(b);XR(A)::S(C),XB(b)
- P(g);S_CUTB(f)::B(I)
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD::S(C)
- B(f);N_GUARD::R(H),XB(f)
- S(a);N_GUARD::R1(A)
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