MESON Chess Problem Database

Problem Display
PID: 242328 (2qNr3/2Rrnpb1/pnb5/1pN4Q/1P1k4/R3p3/4B2B/K7 w - - 0 1)

Morra, Juan Carlos

Magyar Sakkelet, 1956

2qNr3/2Rrnpb1/pnb5/1pN4Q/1P1k4/R3p3/4B2B/K7

#2

9 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Sb3#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bh6
      • 2.Qe5#
    • 1...Bf8
      • 2.Qe5#
    • 1...Sc4
      • 2.Rd3#
    • 1...Sd5
      • 2.Sxc6#
    • 1...Sg6
      • 2.Sxc6#
    • 1...Sg8
      • 2.Sxc6#
    • 1...f6
      • 2.Sde6#
  • Tries
    • 1.Qg4+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kd5+!
    • 1.Qh4+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kd5+!
    • 1.Qf5?
      • threat
        • 2.Qd3#
      • 1...Be4
        • 2.Sb3#
        • 2.Qxe4#
      • 1...Sxf5!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Rd3#
      • 1...Rd5
        • 2.Qf4#
      • 1...Be4
        • 2.Sb3#
      • 1...Bd5
        • 2.Qxg7#
      • 1...Sbd5
        • 2.Sde6#
      • 1...Sed5
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • B(f);SBLOCK::S(F)
    • B(j);N_GUARD::QAB1(G),XB(j)
    • B(j);N_GUARD::QAB1(G)
    • S(e);SBLOCK::R1(D)
    • S(h);N_GUARD::S(I),XB(f)
    • P(i);N_GUARD::S(I)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR1(G),XB(f)
      • Refutation
        • K(b);CHECK,P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR1(G),XB(f)
      • Refutation
        • K(b);CHECK,P-FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Refutation
        • S(h);XQ(G)
  • Actual
    • Q(G);XP(i)
    • Threat
      • R1(D)
    • Vars
      • R(g);SBLOCK,S_CUTB(f)::QAR2(G)
      • B(f);SBLOCK::S(F)
      • B(f);SBLOCK::QAB(G),XB(j)
      • S(e);SBLOCK::S(I)
      • S(h);N_GUARD::S(I),XB(f)
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