MESON Chess Problem Database

Problem Display
PID: 242306 (Q6q/1p2pR1B/1p2P3/NP1P4/b1N2prb/K1k4n/3R4/4B3 w - - 0 1)

Morra, Juan Carlos

Tijdschrift vd KNSB, 1953

Q6q/1p2pR1B/1p2P3/NP1P4/b1N2prb/K1k4n/3R4/4B3

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rc2#
    • 1...Rg3
      • 2.Rd1#
    • 1...Bc2
      • 2.Rd3#
    • 1...Bg5
      • 2.Rd1#
    • 1...Bf6
      • 2.Rd1#
    • 1...Sf2
      • 2.Rd1#
    • 1...Sg5
      • 2.Qxh8#
    • 1...f3
      • 2.Rxf3#
  • Tries
    • 1.Qxh8+?
      • 1...Bf6
        • 2.Rd1#
      • 1...Rg7!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Se4#
      • 1...Qxh7
        • 2.Qc8#
      • 1...bxa5
        • 2.Qxa5#
      • 1...exd6
        • 2.Rc7#
      • 1...Qd4
        • 2.Rc2#
      • 1...Qe5
        • 2.Qc8#
      • 1...Bc2
        • 2.Rd3#
      • 1...Sf2
        • 2.Rd1#
      • 1...Sg5
        • 2.Qxh8#
      • 1...f3
        • 2.Rxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(j);SBLOCK::B(A)+R(B),DCHECK
    • R(e);S_CUTB(f)::B(A)+R(B)
    • B(c);SBLOCK::B(A)+R(B),DCHECK
    • B(f);N_GUARD::B(A)+R(B)
    • S(b);S_CUTB(f)::B(A)+R(B)
    • S(b);S_CUTB(f),S_CUTR(e)::QAB(K),XQ(j)
    • P(d);OGATE::R(I),XP(d)
  • Tries
    • Try
      • Q(K);CHECK,XQ(j)
      • Vars
        • B(f);P_SPINB(f)::B(A)+R(B)
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(j);N_GUARD,XB(J)::QAR(K)
      • P(g);OGATE,XS(E)::QAB(K),XP(g)
      • P(i);OGATE,XS(D)::R(I)
      • Q(j);SBLOCK::B(A)+R(B),DCHECK
      • Q(j);N_GUARD::QAR(K)
      • B(c);SBLOCK::B(A)+R(B),DCHECK
      • S(b);S_CUTB(f)::B(A)+R(B)
      • S(b);S_CUTB(f),S_CUTR(e)::QAB(K),XQ(j)
      • P(d);OGATE::R(I),XP(d)
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