MESON Chess Problem Database
Problem Display
PID: 150801 (7n/3KQ3/2NBP3/1B1k2N1/1R3b1r/1b2p3/3r4/2n5 w - - 0 1)
Ahlheim, Karl-Heinz
Probleemblad, 1981
#2
8 + 8
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Rd4#
- 1...Rb2
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Re2
- 2.Rd4#
- 1...Rf2
- 2.Rd4#
- 1...Rg2
- 2.Rd4#
- 1...Rdh2
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Bd1
- 2.Bc4#
- 1...Bc2
- 2.Bc4#
- 1...Ba4
- 2.Bc4#
- 1...Bc4
- 2.Bxc4#
- 1...Bxg5
- 2.Qxg5#
- 1...Bxd6
- 2.Qxd6#
- 1...Sd3
- 2.Rd4#
- 1...Ra2
- Tries
- 1.Se4?
- threat
- 2.Sc3#
- 2.Sf6#
- 1...Bxd6
- 2.Qxd6#
- 1...Rc2
- 2.Sf6#
- 2.Rd4#
- 1...Rd3
- 2.Sf6#
- 1...Rh6
- 2.Sc3#
- 1...Bg5
- 2.Sc3#
- 2.Qxg5#
- 1...Sa2
- 2.Sf6#
- 1...Se2
- 2.Sf6#
- 1...Be5!
- threat
- 1.Be2?
- threat
- 2.Bf3#
- 2.Rb5#
- 1...Rxe2
- 2.Rd4#
- 1...Bxg5
- 2.Qxg5#
- 1...Bxd6
- 2.Qxd6#
- 1...Rc2
- 2.Bf3#
- 2.Rd4#
- 1...Rd3
- 2.Bf3#
- 1...Rd4
- 2.Rxd4#
- 2.Rb5#
- 1...Rh3
- 2.Rb5#
- 1...Bd1
- 2.Bc4#
- 2.Rb5#
- 1...Bc2
- 2.Bc4#
- 2.Rb5#
- 1...Ba4
- 2.Bf3#
- 2.Bc4#
- 1...Bc4
- 2.Bf3#
- 2.Bxc4#
- 1...Bh2
- 2.Rb5#
- 1...Bg3
- 2.Rb5#
- 1...Be5
- 2.Rb5#
- 1...Sd3
- 2.Bf3#
- 2.Rd4#
- 1...Sxe2!
- threat
- 1.Bd3?
- threat
- 2.Be4#
- 2.Rd4#
- 2.Rb5#
- 1...Bxg5
- 2.Rb5#
- 2.Qxg5#
- 1...Bxd6
- 2.Qxd6#
- 1...Sxd3
- 2.Rd4#
- 1...Rc2
- 2.Be4#
- 2.Rd4#
- 1...Bc2
- 2.Bc4#
- 2.Rd4#
- 2.Rb5#
- 1...Ba4
- 2.Bc4#
- 2.Be4#
- 2.Rd4#
- 1...Bc4
- 2.Bxc4#
- 2.Be4#
- 1...Bh2
- 2.Rb5#
- 1...Bg3
- 2.Rb5#
- 1...Be5
- 2.Rb5#
- 1...Se2
- 2.Be4#
- 2.Rb5#
- 1...Rxd3!
- threat
- 1.Rc4?
- threat
- 2.Sb4#
- 2.Rc5#
- 1...Bxg5
- 2.Sb4#
- 2.Qxg5#
- 1...Bxd6
- 2.Qxd6#
- 1...Rc2
- 2.Sb4#
- 2.Rd4#
- 1...Sa2
- 2.Rc5#
- 1...Sd3
- 2.Rd4#
- 1...Bxc4!
- threat
- 1.Re4?
- threat
- 2.Sb4#
- 1...Bxg5
- 2.Re5#
- 1...Bxd6
- 2.Qxd6#
- 1...Rd4
- 2.Rxd4#
- 1...Sd3
- 2.Rd4#
- 1...Sa2!
- threat
- 1.Qf7?
- threat
- 2.Se7#
- 1...Bxg5
- 2.Qf5#
- 1...Bc4
- 2.Bxc4#
- 1...Sg6
- 2.e7#
- 1...Bxd6!
- threat
- 1.Se4?
- Keys
- 1.Bf1!
- threat
- 2.Rb5#
- 1...Bxg5
- 2.Qxg5#
- 1...Bxd6
- 2.Qxd6#
- 1...Rc2
- 2.Rd4#
- 1...Re2
- 2.Rd4#
- 1...Rd3
- 2.Bg2#
- 1...Ba4
- 2.Bc4#
- 1...Bc4
- 2.Bxc4#
- 1...Se2
- 2.Bg2#
- 1...Sd3
- 2.Rd4#
- 1...e2
- 2.Bg2#
- threat
- 1.Bf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::R1(A),XR(b)
- B(c);N_GUARD::B(B)
- B(c);N_GUARD::B(B),XB(c)
- B(e);OGATE,XS(C)::QAR(H),XB(e)
- B(e);OGATE,XB(E)::QAR1(H),XB(e)
- S(a);S_CUTR(b)::R1(A)
- Tries
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- B(e);OGATE,XB(E)::QAR1(H),XB(e)
- R(b);::S(C)
- R(f);::S(C)
- S(a);::S(C)
- Refutation
- B(e);
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XB(B)::R1(A)
- B(e);OGATE,XS(C)::QAR(H),XB(e)
- B(e);OGATE,XB(E)::QAR1(H),XB(e)
- R(b);::B(B)
- R(f);::R(A)
- B(e);::R(A)
- Refutation
- S(a);XB(B)
- Try
- B(B);
- Threat
- DUALS(3)
- Vars
- B(e);OGATE,XB(E)::QAR1(H),XB(e)
- S(a);XB(B)::R1(A)
- B(e);::R(A)
- Refutation
- R(b);XB(B)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- B(e);OGATE,XB(E)::QAR1(H),XB(e)
- S(a);::R1(A)
- S(a);S_CUTR(b)::R1(A)
- Refutation
- B(c);XR(A)
- Try
- R(A);
- Threat
- S(D)
- Vars
- B(e);N_GUARD,XS(C)::R1(A)
- B(e);OGATE,XB(E)::QAR1(H),XB(e)
- R(b);N_GUARD::R1(A),XR(b)
- S(a);S_CUTR(b)::R1(A)
- Refutation
- S(a);
- Try
- Q(H);
- Threat
- S(D)
- Vars
- B(e);N_GUARD,XS(C)::QAR2(H)
- B(c);N_GUARD::B(B),XB(c)
- S(h);N_GUARD::QAB(H)+P(F)
- Refutation
- B(e);XB(E)
- Try
- Actual
- B(B);
- Threat
- R(A)
- Vars
- B(e);OGATE,XS(C)::QAR(H),XB(e)
- B(e);OGATE,XB(E)::QAR1(H),XB(e)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::B(B)
- B(c);N_GUARD,P_PINS(D)::B(B)
- B(c);N_GUARD::B(B),XB(c)
- S(a);S_CUTR(b)::B(B)
- S(a);S_CUTR(b)::R1(A)
- P(d);S_CUTR(b)::B(B)
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