MESON Chess Problem Database
Problem Display
PID: 249809 (3R4/8/N3n3/2pB4/1r5r/pP1kB2p/1P2R3/4K3 w - - 0 1)
Ulanov, Leonid
Schweizerische Schachzeitung, 1996
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Rbe4
- 2.Bc4#
- 1...Rhe4
- 2.Bc4#
- 1...Sd4
- 2.Sxc5#
- 1...Sf4
- 2.Sxc5#
- 1...Sg5
- 2.Sxc5#
- 1...Sc7
- 2.Sxc5#
- 1...Sg7
- 2.Sxc5#
- 1...Sxd8
- 2.Sxc5#
- 1...Sf8
- 2.Sxc5#
- 1...c4
- 2.Sxb4#
- 1...Rbe4
- Tries
- 1.Bg1?
- threat
- 2.Bc4#
- 2.Be4#
- 2.Rd2#
- 1...Rxb3
- 2.Rd2#
- 1...Sxd8
- 2.Sxc5#
- 2.Rd2#
- 1...Rbc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rbd4
- 2.Bc4#
- 2.Rd2#
- 1...Rbe4
- 2.Bc4#
- 2.Bxe4#
- 1...Rhc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rhd4
- 2.Be4#
- 2.Rd2#
- 1...Rhe4
- 2.Bc4#
- 2.Bxe4#
- 1...Sd4
- 2.Sxc5#
- 2.Rd2#
- 1...c4
- 2.Sxb4#
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...axb2!
- threat
- 1.Bf2?
- threat
- 2.Bc4#
- 2.Be4#
- 2.Rd2#
- 1...Rxb3
- 2.Rd2#
- 1...Sxd8
- 2.Sxc5#
- 2.Rd2#
- 1...Rbc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rbd4
- 2.Bc4#
- 2.Rd2#
- 1...Rbe4
- 2.Bc4#
- 2.Bxe4#
- 1...Rhc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rhd4
- 2.Be4#
- 2.Rd2#
- 1...Rhe4
- 2.Bc4#
- 2.Bxe4#
- 1...Sd4
- 2.Sxc5#
- 2.Rd2#
- 1...c4
- 2.Sxb4#
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...axb2!
- threat
- 1.Bf4?
- threat
- 2.Bc4#
- 2.Be4#
- 2.Rd2#
- 1...Kd4
- 2.Bxe6#
- 2.Rd2#
- 1...Rxb3
- 2.Bxe6#
- 2.Rd2#
- 1...Rbxf4
- 2.Bc4#
- 2.Be4#
- 1...Rhxf4
- 2.Bc4#
- 2.Be4#
- 1...Sxf4
- 2.Bc4#
- 2.Be4#
- 1...Sxd8
- 2.Rd2#
- 1...Rc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Re4
- 2.Bc4#
- 2.Bxe4#
- 1...Sd4
- 2.Sxc5#
- 2.Be4#
- 2.Rd2#
- 1...c4
- 2.Bxc4#
- 2.Be4#
- 2.Bxe6#
- 2.Rd2#
- 1...axb2!
- threat
- 1.Bxc5?
- threat
- 2.Bc4#
- 2.Be4#
- 2.Rd2#
- 1...Rxb3
- 2.Rd2#
- 1...Sxc5
- 2.Bc4#
- 2.Be4#
- 1...Sxd8
- 2.Rd2#
- 1...Rbc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rbd4
- 2.Bc4#
- 1...Rbe4
- 2.Bc4#
- 2.Bxe4#
- 1...Rhc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rhd4
- 2.Be4#
- 1...Rhe4
- 2.Bc4#
- 2.Bxe4#
- 1...Sd4
- 2.Sxb4#
- 1...axb2!
- threat
- 1.Bg5?
- threat
- 2.Bc4#
- 2.Be4#
- 2.Rd2#
- 1...Kd4
- 2.Bxe6#
- 1...Rxb3
- 2.Rd2#
- 1...Sxg5
- 2.Bc4#
- 2.Be4#
- 1...Sxd8
- 2.Rd2#
- 1...Rbc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rbd4
- 2.Bc4#
- 2.Rd2#
- 1...Rbe4
- 2.Bc4#
- 2.Bxe4#
- 1...Rbf4
- 2.Bc4#
- 2.Be4#
- 1...Rhc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rhd4
- 2.Be4#
- 2.Rd2#
- 1...Rhe4
- 2.Bc4#
- 2.Bxe4#
- 1...Rhf4
- 2.Bc4#
- 2.Be4#
- 1...Sd4
- 2.Sxc5#
- 2.Rd2#
- 1...Sf4
- 2.Bc4#
- 2.Be4#
- 1...c4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...axb2!
- threat
- 1.Bh6?
- threat
- 2.Bc4#
- 2.Be4#
- 2.Rd2#
- 1...Kd4
- 2.Bxe6#
- 1...Rxb3
- 2.Rd2#
- 1...Rxh6
- 2.Bc4#
- 2.Be4#
- 1...Sxd8
- 2.Rd2#
- 1...Rbc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rbd4
- 2.Bc4#
- 2.Rd2#
- 1...Rbe4
- 2.Bc4#
- 2.Bxe4#
- 1...Rbf4
- 2.Bc4#
- 2.Be4#
- 1...Rhc4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...Rhd4
- 2.Be4#
- 2.Rd2#
- 1...Rhe4
- 2.Bc4#
- 2.Bxe4#
- 1...Rhf4
- 2.Bc4#
- 2.Be4#
- 1...Sd4
- 2.Sxc5#
- 2.Rd2#
- 1...Sf4
- 2.Bc4#
- 2.Be4#
- 1...Sg5
- 2.Bc4#
- 2.Be4#
- 1...c4
- 2.Bxc4#
- 2.Be4#
- 2.Rd2#
- 1...axb2!
- threat
- 1.Bxe6+?
- 1...Rbd4
- 2.Sxc5#
- 1...Rhd4
- 2.Sxc5#
- 2.Bf5#
- 1...Ke4!
- 1...Rbd4
- 1.Bg1?
- Keys
- 1.Bd4!
- threat
- 2.Rd2#
- 1...Kxd4
- 2.Bxe6#
- 1...Rbxd4
- 2.Bc4#
- 1...Rhxd4
- 2.Be4#
- 1...Sxd4
- 2.Sxc5#
- 1...cxd4
- 2.Sxb4#
- 1...Re4
- 2.Bxe4#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(d);SBLOCK::R(H)+B(F),DCHECK
- R(e);SBLOCK::R(H)+B(F),DCHECK
- S(g);N_GUARD::S(G),XP(f)
- S(g);N_GUARD,XR(H)::S(G),XP(f)
- P(f);N_GUARD,S_CUTR(e)::S(G),XR(d)
- Tries
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- R(d);XP(D)::R1(C)
- Refutation
- P(a);XP(B)
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- R(d);XP(D)::R1(C)
- Refutation
- P(a);XP(B)
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- S(g);XR(H)::R1(C)
- Refutation
- P(a);XP(B)
- Try
- B(E);XP(f)
- Threat
- DUALS(3)
- Vars
- R(d);XP(D)::R1(C)
- S(g);XR(H)::R1(C)
- R(d);::B(F)
- R(e);::B(F)
- S(g);S_CUTR(e)::S(G),XR(d)
- Refutation
- P(a);XP(B)
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- K(b);P-FLIGHT,S_CUTR(d),S_CUTR(e)::R(H)+B(F),XS(g)
- R(d);XP(D)::R1(C)
- S(g);XR(H)::R1(C)
- Refutation
- P(a);XP(B)
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- K(b);P-FLIGHT,S_CUTR(d),S_CUTR(e)::R(H)+B(F),XS(g)
- R(d);XP(D)::R1(C)
- S(g);XR(H)::R1(C)
- Refutation
- P(a);XP(B)
- Try
- B(F);CHECK,XS(g)
- Vars
- R(d);P_SPINR(d)::S(G),XP(f)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- B(E);
- Threat
- R1(C)
- Vars
- K(b);OGATEB,P-FLIGHT,XB(E)::R(H)+B(F),XS(g)
- R(d);N_GUARD,XB(E)::B(F)
- R(e);N_GUARD,XB(E)::B(F)
- S(g);N_GUARD,SBLOCK,XB(E)::S(G),XP(f)
- P(f);N_GUARD,SBLOCK,XB(E)::S(G),XR(d)
- R(e);N_GUARD,P_PINR(C)::B(F),XR(e)
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