MESON Chess Problem Database

Problem Display
PID: 6303 (8/2N2Q2/2pP1p2/B1pp4/p1k3qR/r1bR1p2/1PKPr3/3N1B2 w - - 0 1)

Mari, Alberto

Schiffmann, Israel Abraham

Revista de Sah, 1928

8/2N2Q2/2pP1p2/B1pp4/p1k3qR/r1bR1p2/1PKPr3/3N1B2

#2

11 + 11

1397 Faszinierendes Schachproblem 1963

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2+
      • 2.Rxd2#
    • 1...Rf2
      • 2.Se3#
    • 1...Rg2
      • 2.Se3#
    • 1...Rh2
      • 2.Se3#
    • 1...Re3
      • 2.Sxe3#
    • 1...Bxb2
      • 2.Sxb2#
  • Tries
    • 1.Bxe2?
      • threat
        • 2.Se3#
      • 1...Bxa5
        • 2.Rxg4#
      • 1...Bd4
        • 2.Rc3#
      • 1...Bxd2!
    • 1.Rxg4+?
      • 1...Re4
        • 2.Se3#
        • 2.Rxd5#
      • 1...Bd4!
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Se3#
      • 1...Qe4+
        • 2.Rd3#
      • 1...Bxb2
        • 2.Sxb2#
      • 1...Bxd2
        • 2.Rxd2#
      • 1...Bxa5
        • 2.Rxg4#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Bb4
        • 2.Rxg4#
      • 1...Bd4
        • 2.Rf5#
      • 1...Be5
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(a);CHECK,OGATE,XP(E)::B(B)+R(F),XR(a)
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD,N_PINP(E)::S(A),XR(a)
    • B(c);XP(C)::S(A),XB(c)
  • Tries
    • Try
      • B(B);N_SPINP(E),XR(a)
      • Threat
        • S(A)
      • Vars
        • B(c);N_GUARD,XB(H)::R(G),XQ(g)
        • B(c);N_SPINQ(g),SBLOCK::B(B)+R(F),DCHECK
      • Refutation
        • B(c);XP(E)
    • Try
      • R(G);CHECK,XQ(g)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • R(F);P_PINR(a),XP(i)
    • Threat
      • S(A)
    • Vars
      • Q(g);CHECK::QAB(K)+R(F)
      • B(c);XP(C)::S(A),XB(c)
      • B(c);OGATE,XP(E)::QAB(K)+R(F),XB(c)
      • B(c);N_GUARD,XB(H)::R(G),XQ(g)
      • P(j);OGATE,P_SPINP(j),XR(F)::QAB1(K),XP(j)
      • B(c);N_GUARD::R(G),XQ(g)
      • B(c);N_SPINQ(g),SBLOCK::QAB(K)+R(F)
      • B(c);::QAB(K)+R(F)
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