Meson Chess Problem Database

Kofman, Rafael Moiseevich

1st Place, Matc gorodov respublik, 1949-1950

8 + 4

113	Shakhmaty v SSSR	1950
3310	2345 Chess Problems	1997

Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 1
Sets
- K(c);N_SPINP(a),S_FLIGHT::B(F)
- S(b);::S(H)
- S(b);N_SPINP(a),XR(B)::S(H)
- S(b);SBLOCK::S(H)
- P(d);SBLOCK::S(H)
Tries
- Try
  - K(A);P-FLIGHT
  - Vars
    - K(c);N_SPINP(a),S_FLIGHT::B(F)
    - S(b);::S(H)
    - S(b);SBLOCK::S(H)
    - P(d);SBLOCK::S(H)
  - Refutation
    - S(b);CHECK,N_SPINP(a),XR(B)
- Try
  - R(B);
  - Vars
    - K(c);N_SPINP(a),S_FLIGHT::B(F)
    - S(b);::S(H)
    - S(b);N_SPINP(a)::S(H)
    - S(b);SBLOCK::S(H)
    - P(d);SBLOCK::S(H)
  - Refutation
    - P(a);CHECK
- Try
  - R(B);N_PINP(a)
  - Vars
    - K(c);S_FLIGHT::B(F)
    - S(b);XR(B)::S(H)
    - S(b);::S(H)
    - S(b);SBLOCK::S(H)
    - P(d);SBLOCK::S(H)
  - Refutation
    - P(a);CHECK
- Try
  - R(B);CHECK,XP(a)
  - Vars
    - K(c);S_FLIGHT::B(F)
  - Refutation
    - K(c);P-FLIGHT,XR(B)
- Try
  - P(E);
  - Vars
    - S(b);N_SPINP(a),XR(B)::S(H)
    - S(b);::S(H)
    - S(b);SBLOCK::S(H)
    - P(d);SBLOCK::S(H)
  - Refutation
    - K(c);N_SPINP(a),S_FLIGHT
Actual
- P(C);
- Vars
  - K(c);N_SPINP(a),S_FLIGHT::S(H)
  - S(b);N_SPINP(a),XR(B)::S(H)
  - S(b);::S(H)
  - S(b);SBLOCK::S(H)
  - P(d);SBLOCK::S(H)

MESON Chess Problem Database