MESON Chess Problem Database
Problem Display
PID: 146713 (8/3r1pB1/6nK/QN1B1kpR/2r3N1/3PPP1n/8/6q1 w - - 0 1)
Whitehead, Cyril
Australian Chess Problem Magazine TT, 1997
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Sd4#
- 1...Rc2
- 2.Sd4#
- 1...Rc3
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Re4
- 2.dxe4#
- 1...Rc5
- 2.Sd4#
- 1...Rc6
- 2.Sd4#
- 1...Rcc7
- 2.Sd4#
- 1...Rc8
- 2.Sd4#
- 1...Rd6
- 2.Sxd6#
- 1...Ra7
- 2.Sd6#
- 1...Rb7
- 2.Sd6#
- 1...Rdc7
- 2.Sd6#
- 1...Re7
- 2.Sd6#
- 1...Sf2
- 2.Rxg5#
- 1...Shf4
- 2.Rxg5#
- 1...Rc1
- Tries
- 1.Be4+?
- 1...Rxe4
- 2.Sd4#
- 1...Ke6!
- 1...Rxe4
- 1.Be6+?
- 1...fxe6
- 2.Sd4#
- 2.Sd6#
- 1...Kxe6!
- 1...fxe6
- 1.Qc3?
- threat
- 2.Qf6#
- 1...Rxc3
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Rc6
- 2.Sd4#
- 1...Rd6
- 2.Sxd6#
- 1...Se5
- 2.Qxe5#
- 1...f6
- 2.Qxf6#
- 1...Qa1!
- threat
- 1.Qb6?
- threat
- 2.Qf6#
- 1...Rc6
- 2.Sd4#
- 1...Rd6
- 2.Sxd6#
- 1...f6
- 2.Be6#
- 2.Qe6#
- 2.Qxf6#
- 1...Qa1!
- threat
- 1.Qd8?
- threat
- 2.Qf6#
- 2.Qxd7#
- 1...Qxe3
- 2.Qf6#
- 1...Rxd5
- 2.Qf6#
- 1...Qa1
- 2.Qxd7#
- 1...Re4
- 2.Qf6#
- 2.dxe4#
- 1...Rc6
- 2.Sd4#
- 1...Rcc7
- 2.Sd4#
- 2.Qf6#
- 1...Rd6
- 2.Sxd6#
- 1...Ra7
- 2.Sd6#
- 2.Qf6#
- 1...Rb7
- 2.Sd6#
- 2.Qf6#
- 1...Rdc7
- 2.Sd6#
- 2.Qf6#
- 1...Re7
- 2.Sd6#
- 1...Shf4
- 2.Rxg5#
- 2.Qxg5#
- 2.Qf6#
- 1...Sgf4
- 2.Qf6#
- 1...Se5
- 2.Qf6#
- 1...Se7
- 2.Qxd7#
- 1...Sf8
- 2.Qf6#
- 1...f6
- 2.Qxf6#
- 2.Qxd7#
- 1...Rxd8!
- threat
- 1.Qa1?
- threat
- 2.Qf6#
- 1...Rc3
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Rc6
- 2.Sd4#
- 1...Rd6
- 2.Sxd6#
- 1...Se5
- 2.Qxe5#
- 1...f6
- 2.Qxf6#
- 1...Qxa1!
- threat
- 1.Qa6?
- threat
- 2.Qf6#
- 1...Rc6
- 2.Sd4#
- 1...Rd6
- 2.Sxd6#
- 1...f6
- 2.Be6#
- 2.Qe6#
- 2.Qxf6#
- 1...Qa1!
- threat
- 1.Be4+?
- Keys
- 1.Qc7!
- threat
- 2.Qxd7#
- 1...Qxe3
- 2.Sxe3#
- 1...Rcxc7
- 2.Sd4#
- 1...Rxd5
- 2.Qxf7#
- 1...Rdxc7
- 2.Sd6#
- 1...Re4
- 2.dxe4#
- 1...Rc6
- 2.Sd4#
- 2.e4#
- 1...Rd6
- 2.Sxd6#
- 1...Re7
- 2.Sd6#
- 1...Rd8
- 2.Qxf7#
- 1...Shf4
- 2.Rxg5#
- 1...Sgf4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf8
- 2.Qe5#
- threat
- 1.Qc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 10
- Sets
- R(c);N_GUARD::S(F)
- R(c);N_GUARD::S(F),XR(c)
- R(c);OGATE::P(A),XR(c)
- R(g);N_GUARD::S(F),XR(g)
- R(g);N_GUARD::S(F)
- S(b);N_GUARD::R1(H),XP(e)
- Tries
- Try
- B(G);CHECK
- Vars
- R(c);XB(G)::QAR(E)+S(F),DCHECK
- Refutation
- K(d);N_SPINP(e),S_FLIGHT
- Try
- B(G);CHECK
- Refutation
- K(d);N_SPINP(e),S_FLIGHT,XB(G)
- Try
- Q(E);
- Threat
- QAR1(E)
- Vars
- R(c);N_GUARD,XQ(E)::S(F)
- R(c);N_GUARD::S(F),XR(c)
- R(c);N_GUARD::S(F)
- R(g);N_GUARD::S(F),XR(g)
- S(f);N_GUARD::QAR1(E),XS(f)
- P(h);::QAR1(E),XP(h)
- Refutation
- Q(a);
- Try
- Q(E);
- Threat
- QAR1(E)
- Vars
- R(c);N_GUARD::S(F)
- R(g);N_GUARD::S(F),XR(g)
- Refutation
- Q(a);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(B)::QAR1(E)
- R(g);XB(G)::QAR1(E)
- Q(a);::QAB(E),XR(g)
- R(c);N_GUARD::S(F)
- R(g);N_GUARD::S(F),XR(g)
- R(g);N_GUARD::S(F)
- S(f);::QAR1(E)
- S(f);::QAB(E),XR(g)
- Refutation
- R(g);XQ(E)
- Try
- Q(E);
- Threat
- QAR1(E)
- Vars
- R(c);N_GUARD::S(F)
- R(c);N_GUARD::S(F),XR(c)
- R(g);N_GUARD::S(F),XR(g)
- S(f);N_GUARD::QAR1(E),XS(f)
- P(h);::QAR1(E),XP(h)
- Refutation
- Q(a);XQ(E)
- Try
- Q(E);
- Threat
- QAR1(E)
- Vars
- R(c);N_GUARD::S(F)
- R(g);N_GUARD::S(F),XR(g)
- Refutation
- Q(a);
- Try
- Actual
- Q(E);
- Threat
- QAB(E),XR(g)
- Vars
- Q(a);XP(B)::S(D),XQ(a)
- R(c);N_GUARD,XQ(E)::S(F)
- R(g);OGATE,XB(G)::QAR2(E),XP(h)
- R(g);N_GUARD,XQ(E)::S(F)
- R(c);OGATE::P(A),XR(c)
- R(g);N_GUARD::S(F),XR(g)
- R(g);N_GUARD::S(F)
- R(g);OGATE::QAR2(E),XP(h)
- S(b);N_GUARD::R1(H),XP(e)
- S(f);N_GUARD::QAR1(E)
- S(f);N_GUARD::QAR1(E),XS(f)
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