MESON Chess Problem Database
Problem Display
PID: 272786 (7B/4p2K/1R6/1P1knN2/qpbP4/p2PbP1B/N7/4Q3 w - - 0 1)
Ivanov, V?
Shakhmatnaya kompozitsiya, 1998
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sxb4#
- 1...Qc2
- 2.Sxb4#
- 1...Qa6
- 2.Sxb4#
- 1...Qa7
- 2.Sxb4#
- 1...Qa8
- 2.Sxb4#
- 1...Bc1
- 2.Qe4#
- 2.Qxe5#
- 1...Bg1
- 2.Qe4#
- 2.Qxe5#
- 1...Bd2
- 2.Qe4#
- 2.Qxe5#
- 1...Bf2
- 2.Qe4#
- 2.Qxe5#
- 1...Bf4
- 2.Qe4#
- 1...Bg5
- 2.Qe4#
- 2.Qxe5#
- 1...Bh6
- 2.Qe4#
- 2.Qxe5#
- 1...Sxd3
- 2.Sxe3#
- 2.Sxe7#
- 1...Sxf3
- 2.Sxe3#
- 2.Sxe7#
- 1...Sg4
- 2.Sxe7#
- 1...Sg6
- 2.Sxe3#
- 1...Sd7
- 2.Sxe3#
- 2.Sxe7#
- 1...Sf7
- 2.Sxe3#
- 2.Sxe7#
- 1...b3
- 2.Sc3#
- 1...e6
- 2.Rd6#
- 1...Qd1
- Tries
- 1.Qc3?
- threat
- 2.Sxe3#
- 2.Sxe7#
- 1...Bxd4
- 2.Qxd4#
- 1...Bxd3
- 2.Qc5#
- 1...bxc3
- 2.Sxc3#
- 1...Sc6
- 2.Qxc4#
- 1...Qa7
- 2.Sxb4#
- 2.Sxe3#
- 1...Bc1
- 2.Sxe7#
- 1...Bg1
- 2.Sxe7#
- 1...Bd2
- 2.Sxe7#
- 1...Bf2
- 2.Sxe7#
- 1...Bf4
- 2.Sxe7#
- 1...Bh6
- 2.Sxe7#
- 1...Sg4
- 2.Sxe7#
- 2.Qxc4#
- 2.dxc4#
- 1...Sg6
- 2.Sxe3#
- 2.Qxc4#
- 2.dxc4#
- 1...e6
- 2.Sxe3#
- 2.Se7#
- 2.Rd6#
- 1...Bg5!
- threat
- 1.Qxe3?
- threat
- 2.Sxe7#
- 2.Qe4#
- 2.Qxe5#
- 1...Sxd3
- 2.Sxe7#
- 2.Qe4#
- 2.Qe6#
- 1...Sxf3
- 2.Sxe7#
- 2.Qxf3#
- 2.Qe4#
- 2.Qe6#
- 1...Qa7
- 2.Sxb4#
- 2.Qe4#
- 2.Qxe5#
- 1...Sg4
- 2.Sxe7#
- 2.Qe4#
- 2.Qe6#
- 1...Sc6
- 2.Qe4#
- 1...Sg6
- 2.Qe4#
- 2.Qe6#
- 1...Sd7
- 2.Sxe7#
- 2.Qe4#
- 2.Qe6#
- 1...Sf7
- 2.Sxe7#
- 2.Qe4#
- 2.Qe6#
- 1...e6
- 2.Se7#
- 2.Rd6#
- 2.Qe4#
- 2.Qxe5#
- 1...Bxd3!
- threat
- 1.dxc4+?
- 1...Sxc4
- 2.Sxe7#
- 1...Kxc4!
- 1...Sxc4
- 1.Qc3?
- Keys
- 1.Qxb4!
- threat
- 2.Sc3#
- 2.Qc5#
- 1...Qxb5
- 2.Sc3#
- 1...Qxb4
- 2.Sxb4#
- 1...Bxd4
- 2.Sxe7#
- 1...Bxa2
- 2.Sxe3#
- 2.Sxe7#
- 2.Qc5#
- 1...Sxd3
- 2.Sc3#
- 2.Sxe3#
- 2.Sxe7#
- 1...Sc6
- 2.Sxe3#
- 1...Qc2
- 2.Qc5#
- 1...Qb3
- 2.Qc5#
- 1...Bd2
- 2.Qc5#
- 1...Sd7
- 2.Sc3#
- 2.Sxe3#
- 2.Sxe7#
- 2.dxc4#
- threat
- 1.Qxb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- Q(c);N_GUARD::S(B),XP(d)
- B(b);OGATE::QAB1(A)
- S(g);::S(H),XP(h)
- S(g);::S(H),XB(b)
- P(d);N_GUARD::S(B)
- P(h);N_GUARD::R1(I)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(b);OGATE,XP(F)::QAR1(A),XB(b)
- B(e);OGATE,P_PINS(H),XP(C)::QAR1(A)
- P(d);XQ(A)::S(B),XP(d)
- S(g);N_GUARD::QAB1(A),XB(e)
- B(b);::S(H),XP(h)
- Refutation
- B(b);
- Try
- Q(A);XB(b)
- Threat
- DUALS(3)
- Vars
- S(g);::QAB1(A)
- Refutation
- B(e);P_PINS(H),XP(C)
- Try
- P(C);CHECK,XB(e)
- Vars
- S(g);SBLOCK,XP(C)::S(H),XP(h)
- Refutation
- K(f);S_FLIGHT,XP(C)
- Try
- Actual
- Q(A);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(c);XP(G)::S(B)
- Q(c);XQ(A)::S(B),XQ(c)
- B(b);SBLOCK,XP(F)::S(H),XP(h)
- S(g);::S(H),XB(b)
- Q(c);::QAR1(A)
- B(b);::QAR1(A)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).