MESON Chess Problem Database
Problem Display
PID: 52299 (8/5R1p/r2p2p1/1p2kNNp/6n1/B5pr/1K5b/2QR3b w - - 0 1)
Valtonen, Kari
5th HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1984-1985
#2
7 + 12
| 5110 | Bekroonde Problemen | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Ra4
- 2.Bxd6#
- 1...Ra5
- 2.Bxd6#
- 1...Ra7
- 2.Bxd6#
- 1...Ra8
- 2.Bxd6#
- 1...Bc6
- 2.Bxd6#
- 1...Ra4
- Tries
- 1.Sh4?
- threat
- 2.Qf4#
- 2.Qc3#
- 1...Rxa3
- 2.Qf4#
- 1...Ra4
- 2.Bxd6#
- 1...Rc6
- 2.Qf4#
- 1...Bg1
- 2.Qf4#
- 1...Se3
- 2.Qc3#
- 1...Sf6
- 2.Re7#
- 1...b4
- 2.Qf4#
- 1...d5
- 2.Qf4#
- 1...g2!
- threat
- 1.Sxd6?
- threat
- 2.Qf4#
- 2.Qc3#
- 1...Rxa3
- 2.Qf4#
- 1...Rxd6
- 2.Bxd6#
- 2.Qf4#
- 1...Rc6
- 2.Qf4#
- 1...Bg1
- 2.Qf4#
- 1...Se3
- 2.Qc3#
- 1...Sf6
- 2.Re7#
- 1...g2
- 2.Qc5#
- 1...b4
- 2.Sc4#
- 2.Qf4#
- 1...Ra4!
- threat
- 1.Sh6?
- threat
- 2.Qf4#
- 2.Qc3#
- 1...Rxa3
- 2.Qf4#
- 1...Ra4
- 2.Bxd6#
- 1...Rc6
- 2.Qf4#
- 1...Bg1
- 2.Qf4#
- 1...Se3
- 2.Qc3#
- 1...Sf6
- 2.Re7#
- 1...b4
- 2.Qf4#
- 1...d5
- 2.Qf4#
- 1...g2!
- threat
- 1.Se7?
- threat
- 2.Qf4#
- 2.Qc3#
- 1...Rxa3
- 2.Qf4#
- 1...g2
- 2.Rd5#
- 1...Ra4
- 2.Bxd6#
- 1...Rc6
- 2.Qf4#
- 1...Bg1
- 2.Qf4#
- 1...Se3
- 2.Qc3#
- 1...b4
- 2.Qf4#
- 1...d5
- 2.Qf4#
- 1...Sf6!
- threat
- 1.Sg7?
- threat
- 2.Qf4#
- 2.Qc3#
- 1...Rxa3
- 2.Qf4#
- 1...Ra4
- 2.Bxd6#
- 1...Rc6
- 2.Qf4#
- 1...Bg1
- 2.Qf4#
- 1...Se3
- 2.Qc3#
- 1...Sf6
- 2.Re7#
- 1...b4
- 2.Qf4#
- 1...d5
- 2.Qf4#
- 1...g2!
- threat
- 1.Qe3+?
- 1...Be4
- 2.Qxe4#
- 1...Sxe3!
- 1...Be4
- 1.Sh4?
- Keys
- 1.Sxg3!
- threat
- 2.Qf4#
- 2.Qc3#
- 1...Rxg3
- 2.Qf4#
- 1...Rxa3
- 2.Qf4#
- 1...Bxg3
- 2.Qc3#
- 1...Ra4
- 2.Bxd6#
- 1...Rc6
- 2.Qf4#
- 1...Bg1
- 2.Qf4#
- 1...Se3
- 2.Qc3#
- 1...Sf6
- 2.Re7#
- 1...b4
- 2.Qf4#
- 1...d5
- 2.Qf4#
- threat
- 1.Sxg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 4
- Sets
- R(i);N_GUARD::B(D),XP(j)
- B(a);S_CUTR(i)::B(D),XP(j)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(i);XB(D)::QAB1(A)
- R(i);N_GUARD::B(D),XP(j)
- R(i);::QAB1(A)
- B(b);::QAB1(A)
- S(e);::QAB(A)
- S(e);SBLOCK::R(G)
- P(f);::QAB1(A)
- P(j);::QAB1(A)
- Refutation
- P(c);
- Try
- S(E);XP(j)
- Threat
- DUALS(2)
- Vars
- R(i);XB(D)::QAB1(A)
- R(i);::QAB1(A)
- B(b);::QAB1(A)
- S(e);::QAB(A)
- S(e);SBLOCK::R(G)
- P(c);S_CUTB(a)::QAR2(A)
- Refutation
- R(i);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(i);XB(D)::QAB1(A)
- R(i);N_GUARD::B(D),XP(j)
- R(i);::QAB1(A)
- B(b);::QAB1(A)
- S(e);::QAB(A)
- S(e);SBLOCK::R(G)
- P(f);::QAB1(A)
- P(j);::QAB1(A)
- Refutation
- P(c);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(i);XB(D)::QAB1(A)
- P(c);S_CUTB(a)::R1(B)
- R(i);N_GUARD::B(D),XP(j)
- R(i);::QAB1(A)
- B(b);::QAB1(A)
- S(e);::QAB(A)
- P(f);::QAB1(A)
- P(j);::QAB1(A)
- Refutation
- S(e);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(i);XB(D)::QAB1(A)
- R(i);N_GUARD::B(D),XP(j)
- R(i);::QAB1(A)
- B(b);::QAB1(A)
- S(e);::QAB(A)
- S(e);SBLOCK::R(G)
- P(f);::QAB1(A)
- P(j);::QAB1(A)
- Refutation
- P(c);
- Try
- Q(A);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
- Refutation
- S(e);XQ(A)
- Try
- Actual
- S(E);XP(c)
- Threat
- DUALS(2)
- Vars
- R(d);XS(E)::QAB1(A)
- R(i);XB(D)::QAB1(A)
- B(b);XS(E)::QAB(A)
- R(i);N_GUARD::B(D),XP(j)
- R(i);::QAB1(A)
- B(b);::QAB1(A)
- S(e);::QAB(A)
- S(e);SBLOCK::R(G)
- P(f);::QAB1(A)
- P(j);::QAB1(A)
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