MESON Chess Problem Database

Problem Display
PID: 242331 (2n5/8/3N1R2/1Bpkp3/4N3/b5K1/2b5/Q7 w - - 0 1)

Morra, Juan Carlos

Revista Romana de Sah, 1956

2n5/8/3N1R2/1Bpkp3/4N3/b5K1/2b5/Q7

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxd1#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Qxe5#
      • 1...Kxe4
        • 2.Qxe5#
      • 1...Bb2!
    • 1.Rf5?
      • threat
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Bxe4
        • 2.Qxe5#
      • 1...Bb2!
    • 1.Qd1+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Bxd1!
    • 1.Qa2+?
      • 1...Bb3
        • 2.Qd2#
      • 1...c4
        • 2.Qxc4#
      • 1...Kd4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Bxe4
        • 2.Se3#
      • 1...Bb2
        • 2.Qa8#
      • 1...Bb4
        • 2.Qa8#
      • 1...c4
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR(A),XB(a)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A),XP(e)
      • Refutation
        • B(b);
    • Try
      • R(F);P_PINP(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(C)::QAR1(A),XP(e)
      • Refutation
        • B(b);
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(A),XB(a)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);OGATE,P_SPINB(a)::QAR(A)
        • P(c);P_SPINP(c)::QAB1(A),XP(c)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • S(C)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(C)::QAB(A)
      • B(a);SBLOCK,XS(C)::S(E)
      • B(b);OGATE::QAB(A)
      • P(c);SBLOCK::B(D)
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