MESON Chess Problem Database
Problem Display
PID: 99546 (3R1b2/8/1pp5/1Pk2bQ1/P1p3n1/KB2pnB1/4Pr2/3R4 w - - 0 1)
Hjelle, David
Magyar Sakkelet, 1963
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bd6
- 2.Bxd6#
- 1...Bh6
- 2.Bd6#
- 2.Qe7#
- 1...Be7
- 2.Qxe7#
- 1...Bg7
- 2.Bd6#
- 2.Qe7#
- 1...cxb3
- 2.Rc1#
- 1...cxb5
- 2.Rc8#
- 1...Bd6
- Tries
- 1.Qxe3+?
- 1...Sd4
- 2.Qxd4#
- 1...Sxe3!
- 1...Sd4
- 1.Qf4?
- threat
- 2.Qxc4#
- 1...cxb3
- 2.Qb4#
- 1...cxb5
- 2.Qc7#
- 1...Sd4
- 2.Qxd4#
- 1...Bd3
- 2.Qxf8#
- 1...Be4
- 2.Qxf8#
- 1...Be6
- 2.Qxf8#
- 1...Sd2
- 2.Qd4#
- 1...Sfe5
- 2.Qd4#
- 1...c3
- 2.Qb4#
- 2.Qc4#
- 1...Sge5!
- threat
- 1.Qf6?
- threat
- 2.Qxc6#
- 2.Qxf8#
- 1...cxb3
- 2.Qc3#
- 2.Qxc6#
- 1...cxb5
- 2.R1d5#
- 2.R8d5#
- 1...Sd4
- 2.Qxd4#
- 2.Qxf8#
- 1...Be4
- 2.Qxf8#
- 1...Be6
- 2.Qxf8#
- 1...Bd7
- 2.Qxf8#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Bh6
- 2.Bd6#
- 2.Qe7#
- 2.Qxc6#
- 2.Qd6#
- 1...Be7
- 2.Qxe7#
- 2.Qxc6#
- 1...Bg7
- 2.Bd6#
- 2.Qe7#
- 2.Qxc6#
- 2.Qd6#
- 1...Sfe5
- 2.Qxf8#
- 1...Sge5
- 2.Qxf8#
- 1...Sxf6!
- threat
- 1.Qh6?
- threat
- 2.Qxf8#
- 2.Qxc6#
- 1...Bxh6
- 2.Bd6#
- 1...cxb3
- 2.Qxc6#
- 1...cxb5
- 2.R1d5#
- 2.R8d5#
- 1...Sd4
- 2.Qxf8#
- 1...Be4
- 2.Qxf8#
- 1...Be6
- 2.Qxf8#
- 1...Bg6
- 2.Qxf8#
- 1...Bd7
- 2.Qxf8#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Be7
- 2.Qxc6#
- 1...Bg7
- 2.Bd6#
- 2.Qxc6#
- 2.Qd6#
- 1...Sfe5
- 2.Qxf8#
- 1...Sge5
- 2.Qxf8#
- 1...Sf6
- 2.Qxf8#
- 1...Sxh6!
- threat
- 1.Qxf5+?
- 1...Sge5
- 2.Qxf8#
- 1...Sfe5!
- 1...Sge5
- 1.Qg8?
- threat
- 2.Qxc4#
- 2.Qxf8#
- 1...cxb5
- 2.Qd5#
- 1...Bd3
- 2.Qxf8#
- 1...Be6
- 2.Qxf8#
- 1...Bd6
- 2.Bxd6#
- 2.Qxc4#
- 1...Bh6
- 2.Bd6#
- 2.Qxc4#
- 1...Be7
- 2.Qxc4#
- 1...Bg7
- 2.Bd6#
- 2.Qxc4#
- 1...Sd2
- 2.Qxf8#
- 1...Sfe5
- 2.Qxf8#
- 1...Sge5
- 2.Qxf8#
- 1...c3
- 2.Qc4#
- 2.Qxf8#
- 1...cxb3!
- threat
- 1.Qxe3+?
- Keys
- 1.Qg7!
- threat
- 2.Qxf8#
- 1...Bxg7
- 2.Bd6#
- 1...cxb3
- 2.Qc3#
- 1...cxb5
- 2.Qc7#
- 1...Bd6
- 2.Bxd6#
- 1...Be7
- 2.Qxe7#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(j);N_GUARD::B(E),XB(j)
- B(j);N_GUARD::QAB(H),XB(j)
- P(d);OGATEB,XB(D)::R(A)
- P(i);OGATEB,XP(G)::R(I)
- Tries
- Try
- Q(H);CHECK,N_PINB(g),XP(b)
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAB1(H),XS(c)
- Refutation
- S(e);XQ(H)
- Try
- Q(H);N_PINB(g)
- Threat
- QAR1(H),XP(d)
- Vars
- P(d);OGATE,XB(D)::QAB1(H)
- P(i);OGATEB,XP(G)::QAR2(H)
- S(c);N_GUARD::QAB1(H),XS(c)
- B(g);OGATE::QAB(H),XB(j)
- S(c);N_GUARD::QAB1(H)
- Refutation
- S(e);
- Try
- Q(H);N_PINB(g)
- Threat
- DUALS(2)
- Vars
- B(g);::QAB(H),XB(j)
- S(c);::QAB(H),XB(j)
- S(e);::QAB(H),XB(j)
- Refutation
- S(e);XQ(H)
- Try
- Q(H);N_PINB(g)
- Threat
- DUALS(2)
- Vars
- B(j);N_GUARD,XQ(H)::B(E)
- P(d);XB(D)::QAR1(H),XP(i)
- S(c);::QAB(H),XB(j)
- B(g);::QAB(H),XB(j)
- B(j);::QAR1(H),XP(i)
- S(e);::QAB(H),XB(j)
- Refutation
- S(e);XQ(H)
- Try
- Q(H);CHECK,XB(g)
- Vars
- S(e);P_SPINS(e)::QAB(H),XB(j)
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(H);N_PINB(g)
- Threat
- DUALS(2)
- Vars
- P(i);N_GUARD,XP(G)::QAR1(H)
- B(g);::QAB(H),XB(j)
- B(j);::QAR1(H),XP(d)
- S(c);::QAB(H),XB(j)
- S(e);::QAB(H),XB(j)
- Refutation
- P(d);XB(D)
- Try
- Actual
- Q(H);N_PINB(g)
- Threat
- QAB(H),XB(j)
- Vars
- B(j);N_GUARD,XQ(H)::B(E)
- P(d);OGATEB,XB(D)::QAR2(H)
- P(i);OGATEB,XP(G)::QAR2(H)
- B(j);N_GUARD::B(E),XB(j)
- B(j);N_GUARD::QAB(H),XB(j)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).