Meson Chess Problem Database

Goldschmidt, Josef

Chess, 1953

11 + 10

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
Sets
- R(e);XB(D)::S(G),XR(e)
- R(e);N_GUARD,P_PINP(I)::S(G)
- R(e);N_GUARD::S(G),XR(e)
- B(h);N_GUARD::QAB1(J),XB(h)
- S(a);N_GUARD,S_CUTR(b)::P(B),XP(c)
- S(a);N_GUARD,S_CUTR(b),XP(C)::P(B),XP(c)
- S(i);N_GUARD::QAR1(J)
- S(i);N_GUARD::QAR1(J),XS(i)
- P(f);S_CUTR(e),XB(D)::S(G)
- P(f);S_CUTR(e)::S(G)
- P(g);SBLOCK,XS(F)::QAB(J),XB(h)
Tries
- Try
  - B(E);CHECK
  - Vars
    - S(a);SBLOCK,XB(E)::P(B),XP(c)
  - Refutation
    - R(b);XB(E)
- Try
  - Q(J);CHECK
  - Vars
    - S(i);N_GUARD,P_SPINS(i)::QAR1(J),XS(i)
  - Refutation
    - K(d);P-FLIGHT,XS(F)
- Try
  - P(B);CHECK,XP(c)
  - Vars
    - S(a);OGATE,P_SPINR(b),XP(B)::P(C),XS(a)
  - Refutation
    - R(b);P_PINP(I),P_SPINS(a),XP(B)
- Try
  - P(C);CHECK,XP(c)
  - Vars
    - S(a);OGATE,XP(C)::P(B),XS(a)
  - Refutation
    - R(b);P_PINP(I),XP(C)
- Try
  - P(I);XS(i)
  - Threat
    - QAR1(J)
  - Vars
    - R(e);CHECK,N_GUARD::QAR1(J),XR(e)
  - Refutation
    - R(e);CHECK,XS(I)
- Try
  - P(I);XS(i)
  - Threat
    - DUALS(2)
  - Vars
    - R(e);CHECK,N_GUARD::QAR1(J),XR(e)
    - R(b);XP(B)::QAR1(J)
    - R(b);::QAR1(J)
  - Refutation
    - R(e);CHECK,XR(I)
Actual
- S(F);
- Threat
  - QAB(J),XB(h)
- Vars
  - R(e);XB(D)::S(G),XR(e)
  - S(a);N_GUARD,S_CUTR(b),XS(F)::P(B),XP(c)
  - P(f);S_CUTR(e),XB(D)::S(G)
  - R(b);OGATE::P(B),XR(b)
  - S(i);N_GUARD::QAR1(J)
  - S(i);N_GUARD::QAR1(J),XS(i)

MESON Chess Problem Database