MESON Chess Problem Database

Problem Display
PID: 71546 (K6R/pp2Bk1n/r5pP/8/b2NQ1p1/5b2/5R2/8 w - - 0 1)

Cristoffanini, Guido

Revista de Sah, 1926

K6R/pp2Bk1n/r5pP/8/b2NQ1p1/5b2/5R2/8

#2

7 + 9

102 Probleemblad 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Qe6#
    • 1...Re6
      • 2.Qxe6#
    • 1...Bc6
      • 2.Qe6#
    • 1...Sg5
      • 2.Rf8#
    • 1...Sf6
      • 2.Rf8#
    • 1...Sf8
      • 2.Rxf8#
    • 1...g5
      • 2.Qxh7#
  • Tries
    • 1.Rxf3+?
      • 1...Rf6
        • 2.Qe6#
      • 1...Sf6
        • 2.Rf8#
      • 1...gxf3!
    • 1.Qd5+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Kxe7!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Qe7#
      • 1...Re6
        • 2.Qxe6#
      • 1...g5
        • 2.Qxh7#
      • 1...b5
        • 2.Qb7#
      • 1...b6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD::QAB1(C)
    • R(d);N_GUARD::QAB1(C),XR(d)
    • B(b);S_CUTR(d)::QAB1(C)
    • S(i);N_GUARD::R1(G)
    • S(i);N_GUARD,N_SPINB(a)::R1(G)
    • S(i);N_GUARD::R1(G),XS(i)
    • P(e);OGATE::QAR2(C),XS(i)
  • Tries
    • Try
      • R(A);CHECK,XB(a)
      • Vars
        • R(d);P_SPINR(d)::QAB1(C)
        • S(i);P_SPINS(i)::R1(G)
      • Refutation
        • P(c);XR(A)
    • Try
      • Q(C);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAB1(C),XR(d)
      • Refutation
        • K(h);N_SPINB(a),P-FLIGHT,XB(E)
  • Actual
    • B(E);
    • Threat
      • QAR1(C)
    • Vars
      • R(d);N_GUARD::QAB1(C),XR(d)
      • P(e);OGATE::QAR2(C),XS(i)
      • P(g);P_PINQ(C),S_CUTB(b)::QAR(C)
      • P(g);P_PINQ(C),S_CUTR(d)::QAB(C)
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