MESON Chess Problem Database
Problem Display
PID: 218839 (4KQ2/2N1PP2/N1nk1B2/1R1p4/B7/8/3r4/5R2 w - - 0 1)
Ritchings, Laurie
Ritchings, Mark
The Problemist, 1987
#2
10 + 4
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Rxd5#
- 1...Rb2
- 2.Rxd5#
- 1...Rc2
- 2.Rxd5#
- 1...Re2
- 2.Rxd5#
- 1...Rf2
- 2.Rxd5#
- 1...Rg2
- 2.Rxd5#
- 1...Rh2
- 2.Rxd5#
- 1...Sd4
- 2.Rxd5#
- 1...Sxe7
- 2.Rb6#
- 1...Sd8
- 2.exd8S#
- 1...d4
- 2.Rd5#
- 1...Ra2
- Tries
- 1.Ba1?
- threat
- 2.Rf6#
- 2.Qh6#
- 1...Sxe7
- 2.Rf6#
- 2.Rb6#
- 1...Rb2
- 2.Rxd5#
- 1...Sd4
- 2.Rxd5#
- 1...Se5
- 2.Rf6#
- 1...Sd8
- 2.exd8S#
- 1...Re2
- 2.Rxd5#
- 1...Rf2
- 2.Rxd5#
- 1...Rg2
- 2.Rf6#
- 2.Rxd5#
- 1...Rh2
- 2.Rf6#
- 2.Rxd5#
- 1...Rd4!
- threat
- 1.Bb2?
- threat
- 2.Rf6#
- 2.Qh6#
- 1...Rxb2
- 2.Rxd5#
- 1...Sxe7
- 2.Rf6#
- 2.Rb6#
- 1...Sd4
- 2.Rxd5#
- 1...Se5
- 2.Rf6#
- 1...Sd8
- 2.exd8S#
- 1...Re2
- 2.Rxd5#
- 1...Rf2
- 2.Rxd5#
- 1...Rg2
- 2.Rf6#
- 2.Rxd5#
- 1...Rh2
- 2.Rf6#
- 2.Rxd5#
- 1...Rd4!
- threat
- 1.Bc3?
- threat
- 2.Rf6#
- 2.Qh6#
- 1...Sxe7
- 2.Rf6#
- 2.Rb6#
- 1...Sd4
- 2.Rxd5#
- 1...Se5
- 2.Rf6#
- 1...Sd8
- 2.exd8S#
- 1...Re2
- 2.Rxd5#
- 1...Rf2
- 2.Rxd5#
- 1...Rg2
- 2.Rf6#
- 2.Rxd5#
- 1...Rh2
- 2.Rf6#
- 2.Rxd5#
- 1...Rd4!
- threat
- 1.Bd4?
- threat
- 2.Rf6#
- 2.Rxd5#
- 2.Qh6#
- 1...Sxd4
- 2.Rxd5#
- 1...Sxe7
- 2.Rf6#
- 2.Rxd5#
- 2.Rb6#
- 1...Sb4
- 2.Rf6#
- 2.Qh6#
- 1...Se5
- 2.Rf6#
- 2.Rxd5#
- 1...Sd8
- 2.Rxd5#
- 2.exd8S#
- 1...Re2
- 2.Rxd5#
- 1...Rf2
- 2.Rxd5#
- 1...Rg2
- 2.Rf6#
- 2.Rxd5#
- 1...Rh2
- 2.Rf6#
- 2.Rxd5#
- 1...Rxd4!
- threat
- 1.Be5+?
- 1...Sxe5
- 2.Rf6#
- 1...Kxe5!
- 1...Sxe5
- 1.Re1?
- threat
- 2.Re6#
- 1...Sd4
- 2.Rxd5#
- 1...Sd8
- 2.exd8S#
- 1...Re2
- 2.Rxd5#
- 1...Se5!
- threat
- 1.Ba1?
- Keys
- 1.Bh8!
- threat
- 2.Qh6#
- 1...Sxe7
- 2.Rb6#
- 1...Sd4
- 2.Rxd5#
- 1...Se5
- 2.Rf6#
- 1...Sd8
- 2.exd8S#
- 1...Re2
- 2.Rxd5#
- 1...Rf2
- 2.Rxd5#
- 1...Rg2
- 2.Rxd5#
- 1...Rh2
- 2.Rxd5#
- threat
- 1.Bh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(a);N_GUARD::R1(C),XP(b)
- R(a);N_GUARD,P_PINP(G)::R1(C),XP(b)
- S(c);S_CUTR(a)::R1(C),XP(b)
- S(c);OGATEB,P_SPINS(c),XP(G)::R(C)
- S(c);OGATE::PXS(c)=S
- P(b);S_CUTR(a)::R1(C)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD::R1(C),XP(b)
- S(c);S_CUTR(a)::R1(C),XP(b)
- S(c);::R(A)
- S(c);OGATE::PXS(c)=S
- R(a);N_GUARD,P_PINP(G)::R1(C),XP(b)
- Refutation
- R(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XB(E)::R1(C),XP(b)
- S(c);S_CUTR(a)::R1(C),XP(b)
- S(c);::R(A)
- S(c);OGATE::PXS(c)=S
- R(a);N_GUARD,P_PINP(G)::R1(C),XP(b)
- R(a);N_GUARD::R1(C),XP(b)
- Refutation
- R(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(c);S_CUTR(a)::R1(C),XP(b)
- S(c);::R(A)
- S(c);OGATE::PXS(c)=S
- R(a);N_GUARD,P_PINP(G)::R1(C),XP(b)
- R(a);N_GUARD::R1(C),XP(b)
- Refutation
- R(a);
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- S(c);XB(E)::R1(C),XP(b)
- R(a);P_PINP(G)::R1(C),XP(b)
- R(a);::R1(C),XP(b)
- Refutation
- R(a);XB(E)
- Try
- B(E);CHECK
- Vars
- S(c);SBLOCK,XB(E)::R(A)
- Refutation
- K(d);P_SPINP(b),S_FLIGHT,XB(E)
- Try
- R(A);
- Threat
- R1(A)
- Vars
- S(c);S_CUTR(a)::R1(C),XP(b)
- S(c);OGATE::PXS(c)=S
- R(a);N_GUARD,P_PINP(G)::R1(C),XP(b)
- Refutation
- S(c);
- Try
- Actual
- B(E);
- Threat
- QAR(J)
- Vars
- S(c);OGATEB,P_SPINS(c),XP(G)::R(C)
- S(c);S_CUTR(a)::R1(C),XP(b)
- S(c);SBLOCK::R(A)
- S(c);OGATE::PXS(c)=S
- R(a);N_GUARD,P_PINP(G)::R1(C),XP(b)
- R(a);N_GUARD::R1(C),XP(b)
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