MESON Chess Problem Database

Problem Display
PID: 22361 (K7/PN2Qp2/8/p1pbbrp1/Rq2kB2/1p2p3/4N1P1/3R4 w - - 0 1)

Mari, Alberto

1st Prize, Good Companions (May), 1924

K7/PN2Qp2/8/p1pbbrp1/Rq2kB2/1p2p3/4N1P1/3R4

#2

9 + 11

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Sg3#
    • 1...Rf6
      • 2.Qxe5#
    • 1...Bc4
      • 2.Sd6#
    • 1...Be6
      • 2.Sxc5#
    • 1...Bxb7+
      • 2.Qxb7#
    • 1...c4
      • 2.Rd4#
    • 1...gxf4
      • 2.Sc3#
  • Tries
    • 1.Bg3?
      • threat
        • 2.Sc3#
      • 1...Bxb7+
        • 2.Qxb7#
      • 1...Rf1
        • 2.Qxe5#
      • 1...Rf2
        • 2.Qxe5#
      • 1...Rf3
        • 2.Qxe5#
      • 1...Rf6
        • 2.Qxe5#
      • 1...Bc4
        • 2.Sd6#
      • 1...Be6
        • 2.Sxc5#
      • 1...c4
        • 2.Rd4#
      • 1...Rf4!
    • 1.Rxb4+?
      • 1...Bc4
        • 2.Sxc5#
        • 2.Sd6#
        • 2.Rxc4#
      • 1...cxb4
        • 2.Rd4#
      • 1...c4
        • 2.Rd4#
      • 1...axb4!
  • Keys
    • 1.Bh2!
      • threat
        • 2.Sc3#
      • 1...Bxb7+
        • 2.Qxb7#
      • 1...Rf1
        • 2.Qxe5#
      • 1...Rf2
        • 2.Qxe5#
      • 1...Rf3
        • 2.Qxe5#
      • 1...Rf4
        • 2.Sg3#
      • 1...Rf6
        • 2.Qxe5#
      • 1...Bc4
        • 2.Sd6#
      • 1...Be6
        • 2.Sxc5#
      • 1...c4
        • 2.Rd4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(i);SBLOCK,XB(E)::S(B)
    • R(i);N_GUARD::QAR1(H),XB(h)
    • B(g);N_PINS(G),N_SPINQ(c)::S(G)
    • B(g);N_PINS(G),N_SPINB(h)::S(G),XP(f)
    • B(g);CHECK,OGATE,XS(G)::QAB(H),XB(g)
    • P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(A)
    • P(j);SBLOCK,XB(E)::S(B)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(B)
      • Vars
        • B(g);CHECK,OGATE,XS(G)::QAB(H),XB(g)
        • R(i);N_GUARD::QAR1(H),XB(h)
        • B(g);N_PINS(G),N_SPINQ(c)::S(G)
        • B(g);N_PINS(G),N_SPINB(h)::S(G),XP(f)
        • P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(A)
      • Refutation
        • R(i);
    • Try
      • R(D);CHECK,XQ(c)
      • Vars
        • P(f);N_GUARD,XR(D)::R1(A)
        • P(f);N_GUARD,P_SPINP(f)::R1(A)
      • Refutation
        • P(e);XR(D)
  • Actual
    • B(E);
    • Threat
      • S(B)
    • Vars
      • B(g);CHECK,OGATE,XS(G)::QAB(H),XB(g)
      • R(i);N_GUARD::QAR1(H),XB(h)
      • R(i);SBLOCK::S(B)
      • B(g);N_PINS(G),N_SPINQ(c)::S(G)
      • B(g);N_PINS(G),N_SPINB(h)::S(G),XP(f)
      • P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(A)
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