Meson Chess Problem Database

Harley, Brian

All Change Here!, 1919

10 + 9

Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- R(a);::R1(H)
- R(a);P_PINP(C),XP(B)::R1(H)
- P(c);N_GUARD::P(B)
- P(d);N_GUARD::S(I)
- P(h);N_GUARD,SBLOCK::S(G)
- P(h);SBLOCK::B(J)
- P(i);N_GUARD::S(I)
Tries
- Try
  - K(D);S_FLIGHT
  - Vars
    - R(a);XP(B)::R1(H)
    - R(a);::R1(H)
    - P(c);N_GUARD::P(B)
    - P(d);N_GUARD::S(I)
    - P(h);N_GUARD,SBLOCK::S(G)
    - P(h);SBLOCK::B(J)
    - P(i);N_GUARD::S(I)
  - Refutation
    - R(a);CHECK
- Try
  - K(D);P-FLIGHT
  - Vars
    - R(a);XP(B)::R1(H)
    - R(a);::R1(H)
    - P(c);N_GUARD::P(B)
    - P(d);N_GUARD::S(I)
    - P(h);N_GUARD,SBLOCK::S(G)
    - P(h);SBLOCK::B(J)
    - P(i);N_GUARD::S(I)
  - Refutation
    - R(a);CHECK
- Try
  - K(D);P-FLIGHT
  - Vars
    - R(a);P_PINP(C),XP(B)::R1(H)
    - R(a);::R1(H)
    - P(c);N_GUARD::P(B)
    - P(h);N_GUARD,SBLOCK::S(G)
    - P(h);SBLOCK::B(J)
    - P(i);N_GUARD::S(I)
  - Refutation
    - P(d);CHECK
- Try
  - B(A);XR(a)
  - Threat
    - R1(H)
  - Vars
    - P(h);N_GUARD,SBLOCK::S(G)
    - P(i);N_GUARD::S(I)
  - Refutation
    - B(b);XB(A)
- Try
  - P(C);P_SPINP(B)
  - Threat
    - R1(H)
  - Vars
    - P(d);XP(C)::S(I),XP(d)
    - P(h);N_GUARD,SBLOCK::S(G)
    - P(i);N_GUARD::S(I)
  - Refutation
    - R(a);CHECK,XP(B)
Actual
- R(H);
- Vars
  - R(a);P_PINP(C),XP(B)::R1(H)
  - R(a);::R1(H)
  - P(c);N_GUARD::S(G)
  - P(d);N_GUARD::P(C)
  - P(h);N_GUARD::S(G)
  - P(i);N_GUARD,SBLOCK::S(I)
  - P(i);SBLOCK::B(J)

MESON Chess Problem Database