MESON Chess Problem Database
Problem Display
PID: 109285 (k1K1NbB1/4P1r1/8/2N5/8/2n1B3/4r3/5Q2 w - - 0 1)
Ryall, Isaac
La Presse, 1919
#2
7 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qa6#
- 1...Rb2
- 2.Qa6#
- 1...Rc2
- 2.Qa6#
- 1...Rd2
- 2.Qa6#
- 1...Rf2
- 2.Qa6#
- 1...Reg2
- 2.Qa6#
- 1...Rh2
- 2.Qa6#
- 1...Rxe3
- 2.Qa6#
- 1...Re1
- Tries
- 1.Sb3?
- threat
- 2.Sc7#
- 1...Rxe3
- 2.Qa6#
- 1...Sb5
- 2.Bd5#
- 2.Qf3#
- 1...Sd5
- 2.Bxd5#
- 1...Rxe7!
- threat
- 1.Sa4?
- threat
- 2.Sc7#
- 1...Rxe3
- 2.Qa6#
- 1...Sb5
- 2.Bd5#
- 2.Qf3#
- 1...Sd5
- 2.Bxd5#
- 1...Rxe7!
- threat
- 1.Se4?
- threat
- 2.Sc7#
- 1...Rxe3
- 2.Qa6#
- 1...Sb5
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Rxe7!
- threat
- 1.Qf4?
- threat
- 2.Qb8#
- 1...Ka7
- 2.Qb8#
- 1...Rb2!
- threat
- 1.Sb3?
- Keys
- 1.Sd7!
- threat
- 2.Sc7#
- 1...Rxe3
- 2.Qa6#
- 1...Sb5
- 2.Bd5#
- 2.Qf3#
- 1...Sd5
- 2.Bxd5#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(a);OGATE::QAR2(A)
- R(a);OGATE,XB(B)::QAR2(A)
- Tries
- Try
- S(C);
- Threat
- S(F)
- Vars
- R(a);OGATE,XB(B)::QAR2(A)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- R(c);XP(D)
- Try
- S(C);
- Threat
- S(F)
- Vars
- R(a);OGATE,XB(B)::QAR2(A)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- R(c);XP(D)
- Try
- S(C);
- Threat
- S(F)
- Vars
- R(a);OGATE,XB(B)::QAR2(A)
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- R(c);XP(D)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- K(d);P-FLIGHT::QAB1(A)
- Refutation
- R(a);
- Try
- Actual
- S(C);
- Threat
- S(F)
- Vars
- R(a);OGATE,XB(B)::QAR2(A)
- S(b);N_GUARD::B(G),XS(b)
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