MESON Chess Problem Database

Problem Display
PID: 225040 (1b6/3N4/2n1B2p/2Qp1pN1/rR1r1k1B/3Pp1pP/6Pn/4R2K w - - 0 1)

Uris, Miguel

64 Shakhmatnoe obozrenie, 2020

1b6/3N4/2n1B2p/2Qp1pN1/rR1r1k1B/3Pp1pP/6Pn/4R2K

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Qxe3#
    • 1...Rc4
      • 2.Qxe3#
    • 1...Re4
      • 2.Qxe3#
    • 1...Sf1
      • 2.Rxf1#
    • 1...Sxb4
      • 2.Qxd4#
    • 1...Sa5
      • 2.Qxd4#
    • 1...Se5
      • 2.Qxd4#
    • 1...Sa7
      • 2.Qxd4#
    • 1...Se7
      • 2.Qxd4#
    • 1...Sd8
      • 2.Qxd4#
    • 1...e2
      • 2.Qc1#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.Se6#
      • 1...e2
        • 2.Qc1#
      • 1...Sd8
        • 2.Qxd4#
      • 1...hxg5!
    • 1.Bf7?
      • threat
        • 2.Se6#
      • 1...e2
        • 2.Qc1#
      • 1...Sd8
        • 2.Qxd4#
      • 1...hxg5!
    • 1.Bg8?
      • threat
        • 2.Se6#
      • 1...e2
        • 2.Qc1#
      • 1...Sd8
        • 2.Qxd4#
      • 1...hxg5!
    • 1.Rf1+?
      • 1...Sf3
        • 2.Rxf3#
      • 1...Sxf1!
    • 1.Qf8?
      • threat
        • 2.Qxf5#
      • 1...Se7
        • 2.Qxb8#
      • 1...e2!
    • 1.Qc1?
      • threat
        • 2.Qxe3#
      • 1...Sf1
        • 2.Rxf1#
      • 1...Sg4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Bxg3#
      • 1...Rxe4
        • 2.Qxe3#
      • 1...dxe4
        • 2.Qxf5#
      • 1...fxe4
        • 2.Qf8#
      • 1...e2
        • 2.Qc1#
      • 1...Sf1
        • 2.Rxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(e);N_SPINR(e),OGATE,XR(F)::QAB1(H),XP(b)
    • R(e);OGATE::QAB1(H),XP(b)
    • S(a);N_GUARD::R(A),XS(a)
    • S(i);N_GUARD,N_SPINR(e),XR(F)::QAR2(H),XR(e)
    • S(i);N_GUARD::QAR2(H),XR(e)
    • P(b);OGATEB::QAB(H)
  • Tries
    • Try
      • B(J);XP(g)
      • Threat
        • S(I)
      • Vars
        • P(b);OGATEB::QAB(H)
        • S(i);N_GUARD::QAR2(H),XR(e)
      • Refutation
        • P(j);XS(I)
    • Try
      • B(J);
      • Threat
        • S(I)
      • Vars
        • P(b);OGATEB::QAB(H)
        • S(i);N_GUARD::QAR2(H),XR(e)
      • Refutation
        • P(j);XS(I)
    • Try
      • B(J);
      • Threat
        • S(I)
      • Vars
        • P(b);OGATEB::QAB(H)
        • S(i);N_GUARD::QAR2(H),XR(e)
      • Refutation
        • P(j);XS(I)
    • Try
      • R(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(A),XS(a)
      • Refutation
        • S(a);XR(A)
    • Try
      • Q(H);P_PINP(h)
      • Threat
        • QAR1(H),XP(h)
      • Vars
        • S(i);N_GUARD::QAB(H),XB(k)
      • Refutation
        • P(b);
    • Try
      • Q(H);P_PINP(b)
      • Threat
        • QAB1(H),XP(b)
      • Vars
        • S(a);N_GUARD::R(A),XS(a)
      • Refutation
        • S(a);
  • Actual
    • S(I);N_PINR(e)
    • Threat
      • B(G),XP(c)
    • Vars
      • R(e);OGATE,P_SPINR(e),XS(I)::QAB1(H),XP(b)
      • P(g);OGATE,XS(I)::QAR1(H),XP(h)
      • P(h);OGATEB,XS(I)::QAR(H)
      • P(b);OGATEB::QAB(H)
      • S(a);N_GUARD::R(A),XS(a)
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