MESON Chess Problem Database
Problem Display
PID: 78362 (1QRN4/6n1/r1p3K1/1Nk5/3RnB2/8/8/8 w - - 0 1)
Willmott, Arthur
British Chess Magazine, 1988
#2
7 + 5
| 1085 | Australian Chess Problem Magazine | 1993 |
| 1085 | Australian Chess Problem Magazine | 1996 |
| 6329 | Australian Chess | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rxc6#
- 1...Ra2
- 2.Rxc6#
- 1...Ra3
- 2.Rxc6#
- 1...Ra4
- 2.Rxc6#
- 1...Ra5
- 2.Rxc6#
- 1...Rb6
- 2.Qe5#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sf5
- 2.Se6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...Ra1
- Tries
- 1.Kh6?
- 1...Rb6
- 2.Qe5#
- 1...Ra1
- 2.Rxc6#
- 1...Ra2
- 2.Rxc6#
- 1...Ra3
- 2.Rxc6#
- 1...Ra4
- 2.Rxc6#
- 1...Ra5
- 2.Rxc6#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...Sf5+!
- 1...Rb6
- 1.Kxg7?
- threat
- 2.Se6#
- 1...Rb6
- 2.Qe5#
- 1...Sg5
- 2.Bd6#
- 1...Ra7+!
- threat
- 1.Bh2?
- 1...Rb6
- 2.Qe5#
- 1...Ra4
- 2.Rxc6#
- 1...Ra1
- 2.Rxc6#
- 1...Ra2
- 2.Rxc6#
- 1...Ra3
- 2.Rxc6#
- 1...Ra5
- 2.Rxc6#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sf5
- 2.Se6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...Sg3!
- 1...Rb6
- 1.Bg3?
- 1...Rb6
- 2.Qe5#
- 1...Ra4
- 2.Rxc6#
- 1...Ra1
- 2.Rxc6#
- 1...Ra2
- 2.Rxc6#
- 1...Ra3
- 2.Rxc6#
- 1...Ra5
- 2.Rxc6#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sf5
- 2.Se6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...Sxg3!
- 1...Rb6
- 1.Be5?
- 1...Ra4
- 2.Rxc6#
- 1...Ra1
- 2.Rxc6#
- 1...Ra2
- 2.Rxc6#
- 1...Ra3
- 2.Rxc6#
- 1...Ra5
- 2.Rxc6#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sf5
- 2.Se6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...Rb6!
- 1...Ra4
- 1.Rc7?
- 1...Ra4
- 2.Rxc6#
- 1...Ra1
- 2.Rxc6#
- 1...Ra2
- 2.Rxc6#
- 1...Ra3
- 2.Rxc6#
- 1...Ra5
- 2.Rxc6#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sf5
- 2.Se6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...Rb6!
- 1...Ra4
- 1.Qb7?
- 1...Ra4
- 2.Rxc6#
- 2.Qxc6#
- 1...Ra1
- 2.Rxc6#
- 2.Qxc6#
- 1...Ra2
- 2.Rxc6#
- 2.Qxc6#
- 1...Ra3
- 2.Rxc6#
- 2.Qxc6#
- 1...Ra5
- 2.Rxc6#
- 2.Qxc6#
- 1...Ra7
- 2.Rxc6#
- 2.Qxc6#
- 1...Ra8
- 2.Rxc6#
- 2.Qxc6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sf5
- 2.Se6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...Rb6!
- 1...Ra4
- 1.Kh6?
- Keys
- 1.Bc7!
- 1...cxb5+
- 2.Bb6#
- 1...Rb6
- 2.Qxb6#
- 1...Ra4
- 2.Qb6#
- 1...Ra1
- 2.Qb6#
- 1...Ra2
- 2.Qb6#
- 1...Ra3
- 2.Qb6#
- 1...Ra5
- 2.Qb6#
- 1...Ra7
- 2.Qb6#
- 1...Ra8
- 2.Qb6#
- 1...Sd2
- 2.Bd6#
- 1...Sf2
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sg5
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sf5
- 2.Se6#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...cxb5+
- 1.Bc7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::R1(F),XP(d)
- R(c);SBLOCK::QAR2(E)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- R(c);SBLOCK::QAR2(E)
- R(c);N_GUARD::R1(F),XP(d)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- S(e);CHECK
- Try
- K(D);P-FLIGHT,XS(e)
- Threat
- S(G)
- Vars
- R(c);SBLOCK::QAR2(E)
- S(a);N_GUARD::B(B)
- Refutation
- R(c);CHECK
- Try
- B(B);
- Vars
- R(c);SBLOCK::QAR2(E)
- R(c);N_GUARD::R1(F),XP(d)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- S(a);
- Try
- B(B);
- Vars
- R(c);SBLOCK::QAR2(E)
- R(c);N_GUARD::R1(F),XP(d)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- S(a);XB(B)
- Try
- B(B);
- Vars
- R(c);N_GUARD::R1(F),XP(d)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- R(c);
- Try
- R(F);
- Vars
- R(c);N_GUARD::R1(F),XP(d)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- R(c);
- Try
- Q(E);
- Vars
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- R(c);
- Try
- Actual
- B(B);N_PINP(d)
- Vars
- P(d);CHECK,SBLOCK,XS(C)::R(F)+B(B),DCHECK
- R(c);N_GUARD::QAB1(E),XR(c)
- R(c);N_GUARD::QAB1(E)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
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