MESON Chess Problem Database
Problem Display
PID: 81345 (1R6/pNprP3/k1p4q/P1Qppp2/Rp5n/b2K4/3P1P2/n4B2 w - - 0 1)
Macleod, Norman Alasdair
3rd HM., Czech Chess Federation, 1967
#2
10 + 13
| 6455 | The Chessboard Adventures of Norman Macleod | 1996 |
| 56 | The Problemist | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...Qf4
- 2.Qxc6#
- 1...Qg5
- 2.Qxc6#
- 1...Qg7
- 2.Ke3#
- 2.Qxc6#
- 1...Qf8
- 2.Ke3#
- 2.Qxc6#
- 1...Qh5
- 2.Qxc6#
- 1...Qd6
- 2.Ke3#
- 1...Qe6
- 2.Ke3#
- 1...Qf6
- 2.Ke3#
- 1...Qg6
- 2.Ke3#
- 1...Qh7
- 2.Ke3#
- 2.Qxc6#
- 1...Qh8
- 2.Ke3#
- 2.Qxc6#
- 1...Sc2
- 2.Kxc2#
- 1...Sb3
- 2.Kc2#
- 1...Sg6
- 2.Qxc6#
- 1...b3
- 2.Kc3#
- 1...d4
- 2.Qc4#
- 1...e4+
- 2.Kd4#
- 1...Qxd2+
- Tries
- 1.Ke2?
- threat
- 2.Kd1#
- 2.Ke1#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...Qf4
- 2.Qxc6#
- 1...Sc2
- 2.Kd1#
- 1...Sg2
- 2.Kd1#
- 2.Kf3#
- 1...Sf3
- 2.Kd1#
- 2.Kxf3#
- 1...d4
- 2.Qc4#
- 1...Qh5+!
- threat
- 1.Sd6?
- threat
- 2.Qxc6#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...e4+
- 2.Kd4#
- 1...Qxd6
- 2.Ke3#
- 1...Rxd6!
- threat
- 1.Qe3?
- threat
- 2.Sc5#
- 1...Qxe3+
- 2.Kxe3#
- 1...e4+
- 2.Kd4#
- 1...Kb5
- 2.Sc5#
- 1...Sb3
- 2.Kc2#
- 1...b3
- 2.Kc3#
- 1...c5
- 2.Sxc5#
- 1...Qd6!
- threat
- 1.Qxb4?
- threat
- 2.Kc3#
- 2.Sc5#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...e4+
- 2.Kc3#
- 2.Kd4#
- 1...Qf4
- 2.Sc5#
- 1...Qh5
- 2.Sc5#
- 1...Qd6
- 2.Kc3#
- 2.Ke3#
- 1...Bb2
- 2.Sc5#
- 1...Sb3
- 2.Kc2#
- 2.Kc3#
- 1...d4
- 2.Sc5#
- 2.Qc4#
- 1...c5
- 2.Sxc5#
- 1...Bxb4!
- threat
- 1.Qd4?
- threat
- 2.Sc5#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...Kb5
- 2.Sc5#
- 1...Qd6
- 2.Ke3#
- 1...Sb3
- 2.Kc2#
- 1...b3
- 2.Kc3#
- 1...c5
- 2.Sxc5#
- 1...e4+!
- threat
- 1.Qd6?
- threat
- 2.Sc5#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...e4+
- 2.Kd4#
- 1...Kb5
- 2.Sc5#
- 1...Qxd6
- 2.Ke3#
- 1...Sb3
- 2.Kc2#
- 1...b3
- 2.Kc3#
- 1...cxd6!
- threat
- 1.Qxa7+?
- 1...Kb5
- 2.Sc5#
- 1...Kxa7!
- 1...Kb5
- 1.Qc2?
- threat
- 2.Sc5#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...e4+
- 2.Kd4#
- 1...Kb5
- 2.Sc5#
- 1...Qd6
- 2.Ke3#
- 1...b3
- 2.Kc3#
- 1...c5
- 2.Sxc5#
- 1...Sb3!
- threat
- 1.Qc3?
- threat
- 2.Sc5#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...e4+
- 2.Kd4#
- 1...Kb5
- 2.Sc5#
- 1...bxc3
- 2.Kxc3#
- 1...Qd6
- 2.Ke3#
- 1...Sb3
- 2.Kc2#
- 1...c5
- 2.Sxc5#
- 1...b3!
- threat
- 1.Qb5+?
- 1...cxb5
- 2.Sc5#
- 1...Kxb5!
- 1...cxb5
- 1.Qxd5?
- threat
- 2.Sc5#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...e4+
- 2.Kd4#
- 1...c5
- 2.Sxc5#
- 1...Qd6
- 2.Ke3#
- 1...Sb3
- 2.Kc2#
- 1...b3
- 2.Kc3#
- 1...Rxd5+!
- threat
- 1.f4?
- threat
- 2.Ke3#
- 1...Qxf4
- 2.Qxc6#
- 1...exf4
- 2.Kd4#
- 1...Qh5
- 2.Qxc6#
- 1...Sc2
- 2.Kxc2#
- 1...d4
- 2.Qc4#
- 1...Sg2!
- threat
- 1.Ke2?
- Keys
- 1.Qc1!
- threat
- 2.Sc5#
- 1...Qxd2+
- 2.Kxd2#
- 1...Qe3+
- 2.Kxe3#
- 1...e4+
- 2.Kd4#
- 1...Kb5
- 2.Sc5#
- 1...Qd6
- 2.Ke3#
- 1...Sb3
- 2.Kc2#
- 1...b3
- 2.Kc3#
- 1...c5
- 2.Sxc5#
- threat
- 1.Qc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- Q(j);N_GUARD::QAR2(G),XP(i)
- Q(j);N_GUARD,SBLOCK::QAR2(G),XP(i)
- Q(j);::B(A)+K(D)
- S(a);::B(A)+K(D),XS(a)
- S(a);::B(A)+K(D)
- S(d);S_CUTQ(j)::QAR2(G),XP(i)
- P(c);::B(A)+K(D)
- P(e);N_GUARD::QAB(G)
- P(f);CHECK::B(A)+K(D)
- Tries
- Try
- K(D);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- Q(j);N_GUARD::QAR2(G),XP(i)
- S(a);::B(A)+K(D)
- P(e);N_GUARD::QAB(G)
- Refutation
- Q(j);CHECK
- Try
- S(H);
- Threat
- QAR2(G),XP(i)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- P(f);CHECK::B(A)+K(D)
- Q(j);XS(H)::B(A)+K(D)
- Refutation
- R(m);XS(H)
- Try
- Q(G);
- Threat
- S(H)
- Vars
- Q(j);CHECK,XQ(G)::B(A)+K(D),XQ(j)
- P(f);CHECK::B(A)+K(D)
- K(h);S_FLIGHT::R(J)+S(H)
- S(a);::B(A)+K(D)
- P(c);::B(A)+K(D)
- P(i);::S(H),XP(i)
- Refutation
- Q(j);
- Try
- Q(G);XP(c)
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- Q(j);::S(H)
- Q(j);SBLOCK::S(H)
- B(b);::S(H)
- P(i);::S(H),XP(i)
- Refutation
- B(b);XQ(G)
- Try
- Q(G);
- Threat
- S(H)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- K(h);S_FLIGHT::R(J)+S(H)
- Q(j);::B(A)+K(D)
- S(a);::B(A)+K(D)
- P(c);::B(A)+K(D)
- P(i);::S(H),XP(i)
- Refutation
- P(f);CHECK
- Try
- Q(G);P_PINP(i)
- Threat
- S(H)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- P(f);CHECK::B(A)+K(D)
- K(h);N_SPINP(i),S_FLIGHT::R(J)+S(H)
- Q(j);N_SPINP(i),XQ(G)::B(A)+K(D)
- S(a);::B(A)+K(D)
- P(c);::B(A)+K(D)
- Refutation
- P(l);N_SPINP(i),XQ(G)
- Try
- Q(G);CHECK,XP(k)
- Vars
- K(h);S_FLIGHT::R(J)+S(H)
- Refutation
- K(h);P-FLIGHT,XQ(G)
- Try
- Q(G);
- Threat
- S(H)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- P(f);CHECK::B(A)+K(D)
- K(h);S_FLIGHT::R(J)+S(H)
- Q(j);::B(A)+K(D)
- P(c);::B(A)+K(D)
- P(i);::S(H),XP(i)
- Refutation
- S(a);
- Try
- Q(G);
- Threat
- S(H)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- P(f);CHECK::B(A)+K(D)
- K(h);S_FLIGHT::R(J)+S(H)
- P(c);XQ(G)::B(A)+K(D),XP(c)
- Q(j);::B(A)+K(D)
- S(a);::B(A)+K(D)
- P(i);::S(H),XP(i)
- Refutation
- P(c);
- Try
- Q(G);CHECK
- Vars
- P(i);XQ(G)::S(H)
- Refutation
- K(h);S_FLIGHT,XQ(G)
- Try
- Q(G);P_SPINQ(G),XP(e)
- Threat
- S(H)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- P(f);CHECK::B(A)+K(D)
- P(i);::S(H),XP(i)
- Q(j);::B(A)+K(D)
- S(a);::B(A)+K(D)
- P(c);::B(A)+K(D)
- Refutation
- R(m);CHECK,XQ(G)
- Try
- P(C);
- Threat
- B(A)+K(D)
- Vars
- Q(j);N_GUARD,XP(C)::QAR2(G),XP(i)
- P(f);XP(C)::B(A)+K(D)
- Q(j);N_GUARD,SBLOCK::QAR2(G),XP(i)
- S(a);::B(A)+K(D),XS(a)
- P(e);N_GUARD::QAB(G)
- Refutation
- S(d);
- Try
- Actual
- Q(G);
- Threat
- S(H)
- Vars
- Q(j);CHECK,XP(B)::B(A)+K(D),XQ(j)
- Q(j);CHECK::B(A)+K(D),XQ(j)
- P(f);CHECK::B(A)+K(D)
- K(h);S_FLIGHT::R(J)+S(H)
- Q(j);::B(A)+K(D)
- S(a);::B(A)+K(D)
- P(c);::B(A)+K(D)
- P(i);::S(H),XP(i)
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