MESON Chess Problem Database
Problem Display
PID: 161809 (b1N1Qn1n/b2p1p2/3p3K/5kBp/R6R/3rp2P/Bp3r1N/5q2 w - - 0 1)
Akerblom, Johan Axel
Tidskrift for Schack, 1979
#2
9 + 14
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Sxd6#
- 1...Rb3
- 2.Sxd6#
- 1...Rc3
- 2.Sxd6#
- 1...Rd5
- 2.Qe4#
- 1...Bd4
- 2.Sxd6#
- 1...Bf3
- 2.Raf4#
- 2.Rhf4#
- 1...Be4
- 2.Qxe4#
- 1...Bd5
- 2.Sxd6#
- 1...d5
- 2.Sd6#
- 1...Ra3
- Tries
- 1.Sf3?
- threat
- 2.Se7#
- 2.Raf4#
- 2.Rhf4#
- 1...Bxf3
- 2.Raf4#
- 2.Rhf4#
- 1...Rb3
- 2.Sxd6#
- 2.Raf4#
- 2.Rhf4#
- 1...Rd4
- 2.Se7#
- 1...Rd5
- 2.Raf4#
- 2.Rhf4#
- 2.Qe4#
- 1...Bd4
- 2.Sxd6#
- 2.Se7#
- 2.Rf4#
- 1...Be4
- 2.Se7#
- 2.Rf4#
- 2.Qxe4#
- 1...Bd5
- 2.Sxd6#
- 2.Raf4#
- 2.Rhf4#
- 1...Se6
- 2.Se7#
- 1...Sfg6
- 2.Qxd7#
- 1...Shg6
- 2.Qxf7#
- 1...d5
- 2.Sd6#
- 2.Raf4#
- 2.Rhf4#
- 2.Qe5#
- 1...Rxf3!
- threat
- 1.Bd5?
- threat
- 2.Sxd6#
- 2.Qe4#
- 1...Rxd5
- 2.Qe4#
- 1...Bxd5
- 2.Sxd6#
- 1...Qg2
- 2.Sxd6#
- 1...Qh1
- 2.Sxd6#
- 1...Rf4
- 2.Sxd6#
- 1...Rd4
- 2.Sxd6#
- 1...Bc5
- 2.Qe4#
- 1...Bb8
- 2.Qe4#
- 1...Se6!
- threat
- 1.Rae4?
- threat
- 2.Se7#
- 1...Bxe4
- 2.Qxe4#
- 1...Sfg6
- 2.Qxd7#
- 1...Shg6
- 2.Qxf7#
- 1...Rf4!
- threat
- 1.Ra5+?
- 1...Rd5
- 2.Sxd6#
- 2.Qe4#
- 1...Bd5
- 2.Sxd6#
- 2.Qe4#
- 1...d5
- 2.Sd6#
- 2.Qe4#
- 1...Bc5!
- 1...Rd5
- 1.Rhe4?
- threat
- 2.Se7#
- 1...Bxe4
- 2.Qxe4#
- 1...Bd4
- 2.Sxd6#
- 1...Sfg6
- 2.Qxd7#
- 1...Shg6
- 2.Qxf7#
- 1...Rd4!
- threat
- 1.Qe5+?
- 1...dxe5
- 2.Se7#
- 1...Kxe5!
- 1...dxe5
- 1.Qe7?
- threat
- 2.Qf6#
- 1...Bd4
- 2.Sxd6#
- 1...f6
- 2.Qxf6#
- 1...Sh7!
- threat
- 1.Sf3?
- Keys
- 1.Sg4!
- threat
- 2.Se7#
- 1...hxg4
- 2.hxg4#
- 1...Rb3
- 2.Sxd6#
- 1...Rd4
- 2.Sxe3#
- 1...Rd5
- 2.Qe4#
- 1...Bd4
- 2.Sxd6#
- 1...Bd5
- 2.Sxd6#
- 1...Sfg6
- 2.Qxd7#
- 1...Shg6
- 2.Qxf7#
- 1...d5
- 2.Sd6#
- 2.Qe5#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(d);N_GUARD::S(H),XP(h)
- R(d);S_CUTB(l)::QAB1(I)
- B(i);S_CUTR(d)::S(H),XP(h)
- B(l);N_GUARD::QAB1(I),XB(l)
- B(l);S_CUTR(d)::S(H),XP(h)
- P(h);S_CUTR(d)::S(H)
- Tries
- Try
- S(B);
- Threat
- DUALS(3)
- Vars
- R(d);::S(H)
- S(m);::S(H)
- S(m);N_GUARD::QAB(I),XP(j)
- S(n);N_GUARD::QAR2(I),XP(k)
- Refutation
- R(c);XS(B)
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(d);XB(A)::QAB1(I)
- B(l);XB(A)::S(H),XP(h)
- Q(a);::S(H),XP(h)
- R(c);::S(H),XP(h)
- R(d);::S(H),XP(h)
- B(i);::QAB1(I)
- Refutation
- S(m);
- Try
- R(D);
- Threat
- S(H)
- Vars
- B(l);OGATE,XR(D)::QAB1(I),XB(l)
- S(m);N_GUARD::QAB(I),XP(j)
- S(n);N_GUARD::QAR2(I),XP(k)
- Refutation
- R(c);
- Try
- R(D);CHECK
- Refutation
- B(i);P_SPINB(i)
- Try
- R(E);
- Threat
- S(H)
- Vars
- B(l);OGATE,XR(E)::QAB1(I),XB(l)
- B(i);S_CUTR(d)::S(H),XP(h)
- S(m);N_GUARD::QAB(I),XP(j)
- S(n);N_GUARD::QAR2(I),XP(k)
- Refutation
- R(d);
- Try
- Q(I);CHECK
- Vars
- P(h);SBLOCK,XQ(I)::S(H)
- Refutation
- K(f);P-FLIGHT,XQ(I)
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- B(i);S_CUTR(d)::S(H),XP(h)
- P(k);::QAR1(I),XP(k)
- Refutation
- S(m);
- Try
- Actual
- S(B);
- Threat
- S(H)
- Vars
- P(g);OGATE,XS(B)::P(C),XP(g)
- R(d);N_GUARD::S(H),XP(h)
- R(d);N_GUARD,S_CUTB(i)::S(B),XP(e)
- R(d);S_CUTB(l)::QAB1(I)
- B(i);S_CUTR(d)::S(H),XP(h)
- B(l);S_CUTR(d)::S(H),XP(h)
- S(m);N_GUARD::QAB(I),XP(j)
- S(n);N_GUARD::QAR2(I),XP(k)
Developed and maintained by Brian Stephenson.
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