MESON Chess Problem Database
Problem Display
PID: 135790 (8/4p3/1n2B2B/r4N1K/2PPk2P/2PpNR2/2pp1RP1/2nbr3 w - - 0 1)
Hirschenson, Aaron
4/6 Place, AGM, 2009
#2
12 + 10
| 721 | Variantim | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re2
- 2.Rf4#
- 1...Ra1
- 2.Sg3#
- 1...Ra2
- 2.Sg3#
- 1...Ra3
- 2.Sg3#
- 1...Ra4
- 2.Sg3#
- 1...Rxf5+
- 2.Bxf5#
- 1...Ra6
- 2.Sg3#
- 1...Ra7
- 2.Sg3#
- 1...Ra8
- 2.Sg3#
- 1...Bxf3+
- 2.gxf3#
- 1...Sd5
- 2.Sg3#
- 1...Re2
- Tries
- 1.Kg4?
- threat
- 2.Sg3#
- 1...Bxf3+
- 2.gxf3#
- 1...Rxf5
- 2.Bxf5#
- 1...Se2!
- threat
- 1.Kg5?
- threat
- 2.Rf4#
- 1...Rxf5+
- 2.Bxf5#
- 1...Bxf3
- 2.gxf3#
- 1...Sd5
- 2.Sg3#
- 1...Se2!
- threat
- 1.Kg6?
- threat
- 2.Sg3#
- 2.Rf4#
- 1...Rxf5
- 2.Bxf5#
- 1...Bxf3
- 2.Sg3#
- 2.gxf3#
- 1...Sd5
- 2.Sg3#
- 1...Se2!
- threat
- 1.Sf1?
- threat
- 2.Sxd2#
- 2.Sg3#
- 1...Rxf5+
- 2.Bxf5#
- 1...Bxf3+
- 2.gxf3#
- 1...Sxc4
- 2.Sg3#
- 1...Se2
- 2.Sxd2#
- 2.Re3#
- 1...Re2
- 2.Sg3#
- 2.Rf4#
- 1...Sb3
- 2.Sg3#
- 1...Rxf1!
- threat
- 1.Sd5?
- threat
- 2.Sg3#
- 1...Bxf3+
- 2.gxf3#
- 1...Se2
- 2.Re3#
- 1...Rxd5!
- threat
- 1.Bd5+?
- 1...Sxd5
- 2.Sg3#
- 1...Rxd5!
- 1...Sxd5
- 1.Bg5?
- threat
- 2.Sg3#
- 1...Bxf3+
- 2.gxf3#
- 1...Rxf5
- 2.Bxf5#
- 1...Se2!
- threat
- 1.Kg4?
- Keys
- 1.Sg4!
- threat
- 2.Rf4#
- 1...Rxf5+
- 2.Bxf5#
- 1...Bxf3
- 2.gxf3#
- 1...Se2
- 2.Re3#
- 1...Sd5
- 2.Sg3#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(c);N_PINR(E)::R1(E)
- R(h);N_PINS(I)::S(I)
- R(h);CHECK,OGATE,XS(I)::B(K),XR(h)
- B(b);CHECK,OGATE,XR(E)::P(B),XB(b)
- S(i);N_PINS(I)::S(I)
- Tries
- Try
- K(J);N_SPINS(I),S_FLIGHT
- Threat
- S(I)
- Vars
- B(b);CHECK,OGATE,XR(E)::P(B),XB(b)
- R(h);OGATE,XS(I)::B(K),XR(h)
- Refutation
- S(a);N_PINR(E)
- Try
- K(J);N_SPINR(E),P-FLIGHT
- Threat
- R1(E)
- Vars
- R(h);CHECK,OGATE,XS(I)::B(K),XR(h)
- B(b);OGATE,XR(E)::P(B),XB(b)
- S(i);N_PINS(I)::S(I)
- Refutation
- S(a);
- Try
- K(J);N_SPINR(E),N_SPINS(I),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(h);OGATE,XS(I)::B(K),XR(h)
- S(i);::S(I)
- Refutation
- S(a);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,OGATE,XS(I)::B(K),XR(h)
- B(b);CHECK,OGATE,XR(E)::P(B),XB(b)
- S(i);XP(F)::S(D)
- S(a);::S(D)
- Refutation
- R(c);XS(D)
- Try
- S(D);N_SPINS(I)
- Threat
- S(I)
- Vars
- B(b);CHECK,OGATE,XR(E)::P(B),XB(b)
- S(a);N_PINR(E)::R1(E)
- Refutation
- R(h);P_PINS(I),XS(D)
- Try
- B(K);CHECK,N_SPINS(I)
- Vars
- S(i);XB(K)::S(I)
- Refutation
- R(h);P_PINS(I),XB(K)
- Try
- B(L);N_SPINS(I)
- Threat
- S(I)
- Vars
- B(b);CHECK,OGATE,XR(E)::P(B),XB(b)
- R(h);OGATE,P_PINB(L),XS(I)::B(K),XR(h)
- Refutation
- S(a);N_PINR(E)
- Try
- Actual
- S(D);N_SPINR(E)
- Threat
- R1(E)
- Vars
- R(h);CHECK,OGATE,XS(I)::B(K),XR(h)
- B(b);N_PINS(I),OGATE,P_PINS(D),XR(E)::P(B),XB(b)
- S(a);S_CUTR(c)::R1(E)
- S(i);N_PINS(I)::S(I)
Developed and maintained by Brian Stephenson.
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