MESON Chess Problem Database
Problem Display
PID: 91609 (4R1b1/1B6/2KPpQ2/2pN1rp1/1pp1kp2/5R2/1B4P1/8 w - - 0 1)
Albarda, Johannes
Probleemblad, 1952
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Qxe5#
- 1...b3
- 2.Sc3#
- 1...Re5
- Tries
- 1.Kb5?
- threat
- 2.Sc3#
- 1...Rxd5
- 2.Qe5#
- 2.Qg6#
- 1...Rxf6
- 2.Se7#
- 1...Re5
- 2.Qxe5#
- 1...c3
- 2.Sxc3#
- 1...e5!
- threat
- 1.Kb6?
- threat
- 2.Sc3#
- 1...Rxd5
- 2.Qe5#
- 2.Qg6#
- 1...Rxf6
- 2.Se7#
- 1...Re5
- 2.Qxe5#
- 1...c3
- 2.Sxc3#
- 1...e5!
- threat
- 1.Kc7?
- threat
- 2.Sc3#
- 1...Rxd5
- 2.Qe5#
- 2.Qg6#
- 1...Rxf6
- 2.Se7#
- 1...Re5
- 2.Qxe5#
- 1...c3
- 2.Sxc3#
- 1...e5!
- threat
- 1.Kd7?
- threat
- 2.Sc3#
- 1...Rxd5
- 2.Qe5#
- 2.Qg6#
- 1...Rxf6
- 2.Se7#
- 1...Re5
- 2.Qxe5#
- 1...c3
- 2.Sxc3#
- 1...e5!
- threat
- 1.Rxe6+?
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qg6#
- 1...Bxe6!
- 1...Re5
- 1.Qxe6+?
- 1...Re5
- 2.Sf6#
- 2.Qxe5#
- 2.Qg6#
- 1...Bxe6!
- 1...Re5
- 1.Kb5?
- Keys
- 1.Kxc5!
- threat
- 2.Qd4#
- 1...Rxd5+
- 2.Bxd5#
- 1...Rxf6
- 2.Se7#
- 1...Re5
- 2.Qxe5#
- 1...e5
- 2.Sc3#
- threat
- 1.Kxc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(f);N_GUARD,N_SPINP(h)::QAR1(G),XR(f)
- P(a);N_GUARD::S(D)
- Tries
- Try
- K(E);S_FLIGHT
- Threat
- B(H)+S(D),DCHECK
- Vars
- R(f);N_GUARD,XQ(G)::B(H)+S(D)
- R(f);N_GUARD,N_SPINP(h)::QAR1(G),XR(f)
- P(b);::B(H)+S(D),DCHECK,XP(b)
- Refutation
- P(h);
- Try
- K(E);P-FLIGHT
- Threat
- B(H)+S(D),DCHECK
- Vars
- R(f);N_GUARD,XQ(G)::B(H)+S(D)
- R(f);N_GUARD,N_SPINP(h)::QAR1(G),XR(f)
- P(b);::B(H)+S(D),DCHECK,XP(b)
- Refutation
- P(h);
- Try
- K(E);P-FLIGHT
- Threat
- B(H)+S(D),DCHECK
- Vars
- R(f);N_GUARD,XQ(G)::B(H)+S(D)
- R(f);N_GUARD,N_SPINP(h)::QAR1(G),XR(f)
- P(b);::B(H)+S(D),DCHECK,XP(b)
- Refutation
- P(h);
- Try
- K(E);S_FLIGHT
- Threat
- B(H)+S(D),DCHECK
- Vars
- R(f);N_GUARD,XQ(G)::B(H)+S(D)
- R(f);N_GUARD,N_SPINP(h)::QAR1(G),XR(f)
- P(b);::B(H)+S(D),DCHECK,XP(b)
- Refutation
- P(h);
- Try
- R(I);CHECK,XP(h)
- Refutation
- B(i);XR(I)
- Try
- Q(G);CHECK,XP(h)
- Refutation
- B(i);P_SPINB(i),XQ(G)
- Try
- Actual
- K(E);P-FLIGHT,P_SPINS(D),XP(e)
- Threat
- QAR1(G)
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XS(D)::B(H),XR(f)
- R(f);N_PINS(D),XQ(G)::B(H)+S(D)
- R(f);N_GUARD,N_SPINP(h)::QAR1(G),XR(f)
- P(h);N_PINS(D)::B(H)+S(D),DCHECK
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