MESON Chess Problem Database
Problem Display
PID: 146217 (7Q/8/2Npn3/pB2P1p1/qN4K1/bRP1kP2/6R1/4r3 w - - 0 1)
Johnston, TS
Reading Observer, 1912
(First published on Sat Aug 31 1912)
#2
10 + 8
| 14868 | Pirnie Collection | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qxb5
- 2.c4#
- 1...Qxb4+
- 2.cxb4#
- 1...Ra1
- 2.Re2#
- 1...Rb1
- 2.Re2#
- 1...Rc1
- 2.Re2#
- 1...Rd1
- 2.Re2#
- 1...Rf1
- 2.Re2#
- 1...Rh1
- 2.Re2#
- 1...Re2
- 2.Rxe2#
- 1...Sd4
- 2.Sd5#
- 1...Sf4
- 2.Sc2#
- 1...dxe5
- 2.Qxe5#
- 1...Qxb5
- Tries
- 1.Sd4?
- threat
- 2.Sbc2#
- 2.Sd5#
- 2.Sdc2#
- 2.Sf5#
- 1...Qxb3
- 2.Sf5#
- 1...Qxb5
- 2.Sdc2#
- 2.Sf5#
- 1...Bxb4
- 2.Sc2#
- 2.Sf5#
- 1...Sxd4
- 2.Sd5#
- 1...axb4
- 2.Sc2#
- 2.Sf5#
- 1...Re2
- 2.Rxe2#
- 1...Rc1
- 2.Sd5#
- 2.Sf5#
- 2.Re2#
- 1...Sf4
- 2.Sbc2#
- 2.Sdc2#
- 2.Sf5#
- 1...Sc7
- 2.Sbc2#
- 2.Sdc2#
- 2.Sf5#
- 1...Sg7
- 2.Sbc2#
- 2.Sd5#
- 2.Sdc2#
- 1...d5
- 2.Sbc2#
- 2.Sxd5#
- 2.Sdc2#
- 2.Sf5#
- 1...Qxb4!
- threat
- 1.Se7?
- threat
- 2.Sd5#
- 2.Sf5#
- 1...Qxb3
- 2.Sf5#
- 1...Qxb5
- 2.Sf5#
- 1...Re2
- 2.Rxe2#
- 1...Rd1
- 2.Sf5#
- 2.Re2#
- 1...Sd4
- 2.Sbd5#
- 2.Sed5#
- 1...Sf4
- 2.Sc2#
- 2.Sf5#
- 1...Sc7
- 2.Sf5#
- 1...Sg7
- 2.Sd5#
- 1...d5
- 2.Sxd5#
- 2.Sf5#
- 1...Qxb4+!
- threat
- 1.Qh4?
- threat
- 2.Qxe1#
- 2.Qf2#
- 1...Qxb4+
- 2.cxb4#
- 1...Qxb5
- 2.Qf2#
- 2.c4#
- 1...Re2
- 2.Rxe2#
- 1...Ra1
- 2.Re2#
- 2.Qf2#
- 1...Rb1
- 2.Re2#
- 2.Qf2#
- 1...Rc1
- 2.Re2#
- 2.Qf2#
- 1...Rd1
- 2.Re2#
- 2.Qf2#
- 1...Rf1
- 2.Re2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Re2#
- 2.Qf2#
- 1...Sd4
- 2.Sd5#
- 2.Qf2#
- 2.Qxg5#
- 1...Sf4
- 2.Sc2#
- 2.Qf2#
- 1...gxh4!
- threat
- 1.Qh7?
- threat
- 2.Qd3#
- 2.Qe4#
- 1...Qxb4+
- 2.cxb4#
- 1...Qxb5
- 2.Sc2#
- 2.Qe4#
- 2.c4#
- 1...Re2
- 2.Rxe2#
- 2.Qd3#
- 1...Rd1
- 2.Re2#
- 2.Qe4#
- 1...Sf4
- 2.Sc2#
- 2.Qe4#
- 2.Qa7#
- 1...d5
- 2.Qd3#
- 1...Sc5!
- threat
- 1.exd6?
- threat
- 2.Qe5#
- 1...Qxb4+
- 2.cxb4#
- 1...Qxb5
- 2.c4#
- 1...Re2
- 2.Rxe2#
- 1...Sc5
- 2.Qd4#
- 1...Sg7!
- threat
- 1.Sd4?
- Keys
- 1.Qh1!
- threat
- 2.Qxe1#
- 1...Qxb4+
- 2.cxb4#
- 1...Qxb5
- 2.c4#
- 1...Rxh1
- 2.Re2#
- 1...Re2
- 2.Rxe2#
- 1...Ra1
- 2.Re2#
- 1...Rb1
- 2.Re2#
- 1...Rc1
- 2.Re2#
- 1...Rd1
- 2.Re2#
- 1...Rf1
- 2.Re2#
- 1...Rg1
- 2.Qxg1#
- 1...Sd4
- 2.Sd5#
- 1...Sf4
- 2.Sc2#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(d);N_GUARD,N_PINS(E),XB(G)::R(B)+P(C)
- Q(d);CHECK,OGATE,XS(E)::R(B)+P(C),XQ(d)
- R(a);N_GUARD::R1(A)
- R(a);N_GUARD::R1(A),XR(a)
- S(h);N_PINS(E)::S(E)
- P(g);OGATE,XP(H)::QAR2(J),XP(g)
- Tries
- Try
- S(I);N_SPINS(E)
- Threat
- DUALS(4)
- Vars
- Q(d);XR(B)::S(I)
- S(h);XS(I)::S(E)
- R(a);N_GUARD::R1(A),XR(a)
- Refutation
- Q(d);P_PINS(I),XS(E)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- Q(d);N_PINS(E),XR(B)::S(I)
- Q(d);N_PINS(E),XB(G)::S(I)
- R(a);N_GUARD::R1(A),XR(a)
- S(h);::S(I)
- Refutation
- Q(d);CHECK,XS(E)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,XS(E)::R(B)+P(C),XQ(d)
- R(a);N_GUARD::R1(A),XR(a)
- R(a);N_GUARD::R1(A)
- R(a);P_PINR(A)::QAB1(J)
- Refutation
- P(f);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,XS(E)::R(B)+P(C),XQ(d)
- P(g);::QAR1(J)
- Refutation
- S(h);
- Try
- P(H);XP(g)
- Threat
- QAR2(J)
- Vars
- Q(d);CHECK,OGATE,XS(E)::R(B)+P(C),XQ(d)
- Q(d);N_GUARD,N_PINS(E),XB(G)::R(B)+P(C)
- R(a);N_GUARD::R1(A),XR(a)
- S(h);N_GUARD::QAB1(J)
- Refutation
- S(h);
- Try
- Actual
- Q(J);
- Threat
- QAR2(J),XR(a)
- Vars
- Q(d);CHECK,OGATE,XS(E)::R(B)+P(C),XQ(d)
- Q(d);N_GUARD,N_PINS(E),XB(G)::R(B)+P(C)
- R(a);N_GUARD,XQ(J)::R1(A)
- R(a);N_GUARD::R1(A),XR(a)
- R(a);N_GUARD::R1(A)
- R(a);N_GUARD,P_PINR(A)::QAB(J),XR(a)
- S(h);N_PINS(E)::S(E)
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