MESON Chess Problem Database

Problem Display
PID: 246665 (b2Q4/5N2/7p/2p5/p3k3/r1n1NR1K/8/B2Bn3 w - - 0 1)

Morra, Juan Carlos

El Ajedrez Espanol, 1961

b2Q4/5N2/7p/2p5/p3k3/r1n1NR1K/8/B2Bn3

#2

7 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf1?
      • threat
        • 2.Sd2#
        • 2.Sg3#
      • 1...Sxd1
        • 2.Sd2#
        • 2.Qxa8#
      • 1...Bd5
        • 2.Qh4#
      • 1...Se2
        • 2.Sd2#
        • 2.Qxa8#
      • 1...Ra2
        • 2.Sg3#
      • 1...Sb1
        • 2.Sg3#
        • 2.Qxa8#
      • 1...Sxf3!
    • 1.Sf5?
      • threat
        • 2.Sg3#
      • 1...Sxd1
        • 2.Qxa8#
      • 1...Se2
        • 2.Qxa8#
      • 1...Bd5
        • 2.Qh4#
      • 1...Sxf3!
    • 1.Sg5+?
      • 1...Ke5
        • 2.Sc4#
        • 2.Sg4#
        • 2.Rf5#
        • 2.Qf6#
      • 1...hxg5!
    • 1.Qxa8+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Rf4#
      • 1...Sxg2
        • 2.Qd3#
      • 1...Sxf3
        • 2.Bc2#
      • 1...Sxd1
        • 2.Qxa8#
      • 1...Bd5
        • 2.Qh4#
      • 1...Se2
        • 2.Qxa8#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sb1
        • 2.Qxa8#
      • 1...Sa2
        • 2.Qxa8#
      • 1...Sb5
        • 2.Qxa8#
      • 1...Sd5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);SBLOCK::QAR(G)
        • R(b);::S(C)
      • Refutation
        • S(a);XR(D)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(c);N_GUARD,P_PINR(D),XB(B)::QAB(G),XB(h)
        • S(c);N_GUARD,P_PINR(D)::QAB(G),XB(h)
        • B(h);SBLOCK::QAR(G)
      • Refutation
        • S(a);XR(D)
    • Try
      • S(F);CHECK
      • Refutation
        • P(g);XS(F)
    • Try
      • Q(G);CHECK,XB(h)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(c)::QAR1(G)
        • S(c);N_GUARD,P_SPINS(c)::QAB1(G),XS(c)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • R1(D)
    • Vars
      • S(a);N_GUARD,XS(C)::QAB1(G)
      • S(a);N_GUARD,SBLOCK,XR(D)::B(B)
      • S(c);N_GUARD,P_PINR(D),XB(B)::QAB(G),XB(h)
      • B(h);SBLOCK::QAR(G)
      • S(c);N_GUARD,P_PINR(D)::QAB(G),XB(h)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • S(c);P_PINR(D),SBLOCK::S(F)
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