MESON Chess Problem Database
Problem Display
PID: 101853 (6b1/7B/N2Q3B/r2p1R1K/3p4/1PPk1Pp1/nPp5/2rq1nN1 w - - 0 1)
Macleod, Norman Alasdair
diagrammes, 1990
#2
11 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxf3+
- 2.Rxf3#
- 1...Ra3
- 2.Sc5#
- 1...Ra4
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 1...Rxa6
- 2.Qxa6#
- 1...Bf7+
- 2.Rxf7#
- 1...Sxc3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...dxc3
- 2.Rxd5#
- 1...Qxf3+
- Tries
- 1.Qb4?
- threat
- 2.Qxd4#
- 1...Qxf3+
- 2.Rxf3#
- 1...Bf7+
- 2.Rxf7#
- 1...Sxb4
- 2.Sxb4#
- 1...dxc3
- 2.Rxd5#
- 1...Ra4
- 2.Sc5#
- 1...Sxc3!
- threat
- 1.Qf4?
- threat
- 2.Qxd4#
- 1...Bf7+
- 2.Rxf7#
- 1...Sxc3
- 2.Sb4#
- 1...dxc3
- 2.Rxd5#
- 1...Ra4
- 2.Sc5#
- 1...Qxf3+!
- threat
- 1.Qc5?
- threat
- 2.Qxd4#
- 1...Qxf3+
- 2.Rxf3#
- 1...Bf7+
- 2.Rxf7#
- 1...Rxc5
- 2.Sxc5#
- 1...Sxc3
- 2.Sb4#
- 1...dxc3
- 2.Rxd5#
- 1...Ra4!
- threat
- 1.Qe5?
- threat
- 2.Qxd4#
- 1...Qxf3+
- 2.Rxf3#
- 1...Bf7+
- 2.Rxf7#
- 1...Sxc3
- 2.Sb4#
- 1...Ra4
- 2.Sc5#
- 1...dxc3!
- threat
- 1.Qxd5?
- threat
- 2.Qe4#
- 2.Qxd4#
- 1...Qxf3+
- 2.Rxf3#
- 1...Bf7+
- 2.Rxf7#
- 1...Bxd5
- 2.Rxd5#
- 1...Sxc3
- 2.Sb4#
- 1...Se3
- 2.Qxd4#
- 1...Qe2
- 2.Qxd4#
- 1...Qe1
- 2.Qxd4#
- 1...Ra4
- 2.Sc5#
- 2.Qe4#
- 1...Sd2
- 2.Qxd4#
- 1...Rxd5!
- threat
- 1.Qf6?
- threat
- 2.Qxd4#
- 1...Qxf3+
- 2.Rxf3#
- 1...Sxc3
- 2.Sb4#
- 1...dxc3
- 2.Rxd5#
- 1...Ra4
- 2.Sc5#
- 1...Bf7+!
- threat
- 1.Qb4?
- Keys
- 1.Qb6!
- threat
- 2.Qxd4#
- 1...Qxf3+
- 2.Rxf3#
- 1...Bf7+
- 2.Rxf7#
- 1...Sxc3
- 2.Sb4#
- 1...dxc3
- 2.Rxd5#
- 1...Ra4
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- threat
- 1.Qb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- Q(b);CHECK,OGATE,XP(E)::B(K)+R(F),DCHECK,XQ(b)
- R(i);N_GUARD::S(H)
- R(i);N_GUARD::S(H),XR(i)
- R(i);OGATE,XS(H)::QAB(I),XR(i)
- B(k);CHECK,N_GUARD::B(K)+R(F),XB(k)
- S(d);N_GUARD,XP(D)::S(H)
- S(d);N_GUARD::S(H),XS(d)
- P(h);P_SPINP(j),XP(D)::B(K)+R(F),DCHECK,XP(j)
- Tries
- Try
- Q(I);
- Threat
- QAR1(I),XP(h)
- Vars
- Q(b);CHECK,OGATE,XP(E)::B(K)+R(F),DCHECK,XQ(b)
- B(k);CHECK,N_GUARD::B(K)+R(F),XB(k)
- S(d);XQ(I)::S(H),XS(d)
- P(h);XP(D)::B(K)+R(F),DCHECK,XP(j)
- R(i);N_GUARD::S(H)
- Refutation
- S(d);XP(D)
- Try
- Q(I);
- Threat
- QAR1(I),XP(h)
- Vars
- B(k);CHECK,N_GUARD::B(K)+R(F),XB(k)
- S(d);N_GUARD,XP(D)::S(H)
- P(h);XP(D)::B(K)+R(F),DCHECK,XP(j)
- R(i);N_GUARD::S(H)
- Refutation
- Q(b);CHECK,XP(E)
- Try
- Q(I);
- Threat
- QAR1(I),XP(h)
- Vars
- Q(b);CHECK,OGATE,XP(E)::B(K)+R(F),DCHECK,XQ(b)
- B(k);CHECK,N_GUARD::B(K)+R(F),XB(k)
- R(i);XQ(I)::S(H),XR(i)
- S(d);N_GUARD,XP(D)::S(H)
- P(h);XP(D)::B(K)+R(F),DCHECK,XP(j)
- Refutation
- R(i);
- Try
- Q(I);
- Threat
- QAR1(I),XP(h)
- Vars
- Q(b);CHECK,OGATE,XP(E)::B(K)+R(F),DCHECK,XQ(b)
- B(k);CHECK,N_GUARD::B(K)+R(F),XB(k)
- S(d);N_GUARD,XP(D)::S(H)
- R(i);N_GUARD::S(H)
- Refutation
- P(h);XP(D)
- Try
- Q(I);P_PINP(h),XP(j)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATE,XP(E)::B(K)+R(F),DCHECK,XQ(b)
- B(k);CHECK,N_GUARD::B(K)+R(F),XB(k)
- B(k);N_SPINP(h),OGATE,XQ(I)::B(K)+R(F),XB(k)
- S(d);N_GUARD,XP(D)::S(H)
- S(c);::QAR1(I),XP(h)
- Q(b);::QAR1(I),XP(h)
- Q(b);N_PINP(E)::QAR1(I),XP(h)
- Refutation
- R(i);N_SPINP(h),P_PINR(F),XQ(I)
- Try
- Q(I);
- Threat
- QAR1(I),XP(h)
- Vars
- Q(b);CHECK,OGATE,XP(E)::B(K)+R(F),DCHECK,XQ(b)
- S(d);N_GUARD,XP(D)::S(H)
- P(h);XP(D)::B(K)+R(F),DCHECK,XP(j)
- R(i);N_GUARD::S(H)
- Refutation
- B(k);CHECK
- Try
- Actual
- Q(I);
- Threat
- QAR1(I),XP(h)
- Vars
- Q(b);CHECK,OGATE,XP(E)::B(K)+R(F),DCHECK,XQ(b)
- B(k);CHECK,N_GUARD::B(K)+R(F),XB(k)
- S(d);N_GUARD,XP(D)::S(H)
- P(h);XP(D)::B(K)+R(F),DCHECK,XP(j)
- R(i);N_GUARD::S(H)
- R(i);N_GUARD::S(H),XR(i)
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