MESON Chess Problem Database
Problem Display
PID: 796 (5kNK/3pRp2/r5pp/1n2NB2/5R2/7q/p2rp3/1b5Q w - - 0 1)
Macleod, Norman Alasdair
1st HM., British Chess Magazine, 1962
#2
7 + 12
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
| 6455 | The Chessboard Adventures of Norman Macleod | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qxh6#
- 1...Qg2
- 2.Qxh6#
- 1...Qg4
- 2.Qxh6#
- 1...Qxf5
- 2.Qxh6#
- 1...Qa3
- 2.Qxh6#
- 1...Qb3
- 2.Qxh6#
- 1...Qc3
- 2.Qxh6#
- 1...Qd3
- 2.Qxh6#
- 1...Qe3
- 2.Qxh6#
- 1...Qf3
- 2.Qxh6#
- 1...Qg3
- 2.Qxh6#
- 1...Rb2
- 2.Sxd7#
- 1...Rc2
- 2.Sxd7#
- 1...Rd6
- 2.Qa8#
- 1...Re6
- 2.Qa8#
- 1...Rf6
- 2.Qa8#
- 1...Ra8
- 2.Qxa8#
- 1...Bd3
- 2.Sxd7#
- 1...Sd4
- 2.Sxd7#
- 1...Sd6
- 2.Sxd7#
- 1...d5
- 2.Sd7#
- 1...d6
- 2.Sd7#
- 1...f6
- 2.Sxg6#
- 1...Qf1
- Tries
- 1.Sxg6+?
- 1...Rxg6
- 2.Qa8#
- 1...fxg6!
- 1...Rxg6
- 1.Bxb1?
- threat
- 2.Rfxf7#
- 1...Qf1
- 2.Qxh6#
- 1...Qf5
- 2.Qxh6#
- 1...Qe6
- 2.Qxh6#
- 1...Qb3
- 2.Qxh6#
- 1...Qf3
- 2.Qxh6#
- 1...Rf6
- 2.Qa8#
- 1...Sd6
- 2.Sxg6#
- 1...f6
- 2.Sxg6#
- 1...f5!
- threat
- 1.Bc2?
- threat
- 2.Rfxf7#
- 1...Qf1
- 2.Qxh6#
- 1...Qf5
- 2.Qxh6#
- 1...Qe6
- 2.Qxh6#
- 1...Qb3
- 2.Qxh6#
- 1...Qf3
- 2.Qxh6#
- 1...Rf6
- 2.Qa8#
- 1...Sd6
- 2.Sxg6#
- 1...f6
- 2.Sxg6#
- 1...f5!
- threat
- 1.Be6?
- threat
- 2.Rfxf7#
- 1...Qxe6
- 2.Qxh6#
- 1...f5
- 2.Sxg6#
- 1...Qf1
- 2.Qxh6#
- 1...Qf5
- 2.Qxh6#
- 1...Qf3
- 2.Qxh6#
- 1...Sd6
- 2.Sxd7#
- 1...f6
- 2.Rxf6#
- 1...Bf5!
- threat
- 1.Bxd7?
- threat
- 2.Rfxf7#
- 2.Rexf7#
- 2.Re8#
- 1...Qxd7
- 2.Rfxf7#
- 2.Qxh6#
- 1...Rxd7
- 2.Rfxf7#
- 1...f5
- 2.Rf7#
- 2.Re8#
- 1...Qf1
- 2.Rexf7#
- 2.Re8#
- 2.Qxh6#
- 1...Qf5
- 2.Re8#
- 2.Qxh6#
- 1...Qe6
- 2.Qxh6#
- 1...Qb3
- 2.Re8#
- 2.Qxh6#
- 1...Qf3
- 2.Rexf7#
- 2.Re8#
- 2.Qxh6#
- 1...Re6
- 2.Rfxf7#
- 2.Rexf7#
- 2.Qa8#
- 1...Rf6
- 2.Re8#
- 2.Qa8#
- 1...Ra8
- 2.Rfxf7#
- 2.Rexf7#
- 2.Qxa8#
- 1...Bf5
- 2.Rxf7#
- 2.Re8#
- 1...Sc7
- 2.Rfxf7#
- 2.Rexf7#
- 1...f6
- 2.Rf7#
- 2.Re8#
- 1...Sd6!
- threat
- 1.Sxg6+?
- Keys
- 1.Bd3!
- threat
- 2.Rfxf7#
- 1...f5
- 2.Sxd7#
- 1...Qf1
- 2.Sxd7#
- 2.Qxh6#
- 1...Qf5
- 2.Qxh6#
- 1...Qe6
- 2.Qxh6#
- 1...Qf3
- 2.Sxd7#
- 2.Qxh6#
- 1...Rf6
- 2.Qa8#
- 1...Sd6
- 2.Sxg6#
- 1...f6
- 2.Sxg6#
- threat
- 1.Bd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 19
- Sets
- Q(e);OGATE::QAB(A),XP(i)
- Q(e);OGATE,XB(D)::QAB(A),XP(i)
- Q(e);OGATE,P_PINS(C)::QAB(A),XP(i)
- R(c);N_GUARD::S(C),XP(j)
- R(g);N_GUARD::QAR(A)
- R(g);N_GUARD::QAR(A),XR(g)
- B(a);S_CUTR(c)::S(C),XP(j)
- S(f);S_CUTR(c)::S(C),XP(j)
- P(j);S_CUTR(c)::S(C)
- P(k);N_GUARD,S_CUTR(g)::S(C),XP(h)
- Tries
- Try
- S(C);CHECK,XP(h)
- Vars
- R(g);XS(C)::QAR(A)
- Refutation
- P(k);XS(C)
- Try
- B(D);P_PINP(k),XB(a)
- Threat
- R1(B),XP(k)
- Vars
- Q(e);OGATE::QAB(A),XP(i)
- Q(e);N_SPINP(k),OGATE::QAB(A),XP(i)
- R(g);N_GUARD,N_SPINP(k)::QAR(A)
- S(f);S_CUTR(g)::S(C),XP(h)
- P(k);S_CUTR(g)::S(C),XP(h)
- Refutation
- P(k);
- Try
- B(D);P_PINP(k)
- Threat
- R1(B),XP(k)
- Vars
- Q(e);OGATE::QAB(A),XP(i)
- Q(e);N_SPINP(k),OGATE::QAB(A),XP(i)
- R(g);N_GUARD,N_SPINP(k)::QAR(A)
- S(f);S_CUTR(g)::S(C),XP(h)
- P(k);S_CUTR(g)::S(C),XP(h)
- Refutation
- P(k);
- Try
- B(D);P_PINP(k)
- Threat
- R1(B),XP(k)
- Vars
- Q(e);OGATE,XB(D)::QAB(A),XP(i)
- P(k);S_CUTB(a)::S(C),XP(h)
- Q(e);OGATE::QAB(A),XP(i)
- Q(e);N_SPINP(k),OGATE::QAB(A),XP(i)
- S(f);S_CUTR(c)::S(C),XP(j)
- P(k);OGATEB::R(B),XP(k)
- Refutation
- B(a);N_SPINP(k)
- Try
- B(D);P_PINP(k),XP(j)
- Threat
- DUALS(3)
- Vars
- R(c);XB(D)::R1(B),XP(k)
- Q(e);OGATE::QAB(A),XP(i)
- Refutation
- S(f);
- Try
- Actual
- B(D);P_PINP(k)
- Threat
- R1(B),XP(k)
- Vars
- P(k);S_CUTQ(e)::S(C),XP(j)
- Q(e);N_SPINP(k),OGATE::QAB(A),XP(i)
- Q(e);OGATE::QAB(A),XP(i)
- R(g);N_GUARD,N_SPINP(k)::QAR(A)
- S(f);S_CUTR(g)::S(C),XP(h)
- P(k);S_CUTR(g)::S(C),XP(h)
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