Meson Chess Problem Database

Wirtanen, Erkki Aukusti

Buletin Problemistic, 1970

11 + 10

6490	yacpdb	2009

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
Sets
- S(g);::S(G)
- S(g);XS(I)::S(G)
- P(e);OGATEB::R(H)
- P(f);N_GUARD::QAR1(A)
- P(h);N_GUARD,XP(F)::S(I),XP(f)
- P(i);N_GUARD,XP(F)::S(I),XS(g)
Tries
- Try
  - B(K);XS(g)
  - Threat
    - S(G)
  - Vars
    - P(i);XB(K)::S(I),XP(i)
  - Refutation
    - P(b);
- Try
  - R(B);
  - Threat
    - S(G)
  - Refutation
    - P(b);
- Try
  - R(B);CHECK
  - Vars
    - P(f);OGATE,XR(B)::QAR1(A),XP(f)
  - Refutation
    - K(d);P-FLIGHT,XP(F)
- Try
  - R(H);P_PINP(e)
  - Threat
    - R(H),XP(e)
  - Vars
    - S(g);XS(I)::S(G)
    - S(g);::S(G)
  - Refutation
    - P(b);
- Try
  - R(H);XS(g)
  - Threat
    - R(H),XP(e)
  - Vars
    - P(i);XR(H)::S(I),XP(i)
    - P(e);::R(H)
  - Refutation
    - P(b);
- Try
  - Q(A);
  - Threat
    - S(G)
  - Refutation
    - P(c);XQ(A)
- Try
  - Q(A);CHECK
  - Vars
    - S(g);P_SPINS(g)::S(G)
  - Refutation
    - K(d);P-FLIGHT,XP(F)
- Try
  - P(F);XP(h)
  - Threat
    - S(I),XP(f)
  - Vars
    - S(g);XS(I)::S(G)
  - Refutation
    - P(b);
- Try
  - P(F);XP(i)
  - Threat
    - S(I),XS(g)
  - Vars
    - S(g);XS(I)::S(G)
    - S(g);::S(G)
  - Refutation
    - P(b);
Actual
- Q(A);
- Threat
  - QAR1(A)
- Vars
  - K(d);P-FLIGHT,XP(F)::QAB1(A)
  - S(g);XS(I)::S(G)
  - P(h);N_GUARD,SBLOCK,XP(F)::S(I),XP(f)
  - P(i);N_GUARD,SBLOCK,XP(F)::S(I),XS(g)
  - S(g);::S(G)

MESON Chess Problem Database