MESON Chess Problem Database

Problem Display
PID: 162905 (2NR2q1/5Rp1/2p5/b1pb1PQp/2Nkp2K/5Pp1/1Pn5/5B2 w - - 0 1)

Rosner, Eugene David

Die Schwalbe, 2016

2NR2q1/5Rp1/2p5/b1pb1PQp/2Nkp2K/5Pp1/1Pn5/5B2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Qxd2#
    • 1...Bb6
      • 2.Qd2#
    • 1...Bc7
      • 2.Qd2#
    • 1...Sa1
      • 2.Qe3#
    • 1...Se1
      • 2.Qe3#
    • 1...Sa3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sb4
      • 2.Qe3#
    • 1...exf3
      • 2.Qf4#
    • 1...e3
      • 2.Qf4#
    • 1...g6
      • 2.Qf6#
  • Tries
    • 1.Re7?
      • threat
        • 2.Rxe4#
      • 1...Qxd8
        • 2.Qxg7#
      • 1...Bxd8
        • 2.Qd2#
      • 1...exf3
        • 2.Qf4#
      • 1...Qe8
        • 2.Qxg7#
      • 1...e3
        • 2.Re4#
        • 2.Qf4#
      • 1...Qe6!
    • 1.Rxd5+?
      • 1...Kxd5
        • 2.Rd7#
      • 1...cxd5!
    • 1.f6?
      • threat
        • 2.Qe5#
      • 1...gxf6
        • 2.Qxf6#
      • 1...Bc7
        • 2.Qd2#
      • 1...Qe8!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sxc6#
      • 1...Qxd8
        • 2.Qxg7#
      • 1...Bxd8
        • 2.Qd2#
      • 1...exf3
        • 2.Qf4#
      • 1...Qe8
        • 2.Qxg7#
      • 1...Sb4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • B(e);N_GUARD::QAR2(G),XB(e)
    • B(e);N_GUARD::QAR2(G)
    • S(a);N_GUARD::QAB1(G)
    • S(a);N_GUARD::QAB1(G),XS(a)
    • P(d);OGATEB,XP(C)::QAR2(G)
    • P(d);OGATEB::QAR2(G)
    • P(j);N_GUARD::QAB(G)
  • Tries
    • Try
      • R(H);
      • Threat
        • R1(H),XP(d)
      • Vars
        • Q(k);N_GUARD,N_SPINB(g),XR(J)::QAB(G),XP(j)
        • B(e);N_GUARD,N_SPINB(g),XR(J)::QAR2(G)
        • P(d);OGATEB,XP(C)::QAR2(G)
        • Q(k);N_GUARD::QAB(G),XP(j)
      • Refutation
        • Q(k);
    • Try
      • R(J);CHECK,XB(g)
      • Vars
        • K(c);P-FLIGHT,XR(J)::R(H)
      • Refutation
        • P(i);XR(J)
    • Try
      • P(F);
      • Threat
        • QAB1(G)
      • Vars
        • P(j);OGATE,XP(F)::QAB(G),XP(j)
        • B(e);N_GUARD::QAR2(G)
      • Refutation
        • Q(k);
  • Actual
    • S(I);
    • Threat
      • S(I),XP(i)
    • Vars
      • Q(k);N_GUARD,N_SPINB(g),XR(J)::QAB(G),XP(j)
      • B(e);N_GUARD,N_SPINB(g),XR(J)::QAR2(G)
      • P(d);OGATEB,XP(C)::QAR2(G)
      • Q(k);N_GUARD::QAB(G),XP(j)
      • S(a);N_GUARD::QAB1(G)
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