MESON Chess Problem Database

Problem Display
PID: 137476 (B6B/6R1/5Rbn/3p4/N1pkpP2/K1pP3q/n4P2/2Q5 w - - 0 1)

Ellerman, Arnoldo

7th Comm., Magyar Sakkelet, 1964

B6B/6R1/5Rbn/3p4/N1pkpP2/K1pP3q/n4P2/2Q5

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Qd1#
    • 1...Qf1
      • 2.Qe3#
    • 1...Qg2
      • 2.Qe3#
    • 1...Qg4
      • 2.Qe3#
    • 1...Qf5
      • 2.Qe3#
    • 1...Qe6
      • 2.Qe3#
    • 1...Qd7
      • 2.Qe3#
    • 1...Qc8
      • 2.Qe3#
    • 1...Qh1
      • 2.Qe3#
    • 1...Qh2
      • 2.Qe3#
    • 1...Qe3
      • 2.Qxe3#
    • 1...Qh4
      • 2.Qe3#
    • 1...Qh5
      • 2.Qe3#
    • 1...Sb4
      • 2.Qxc3#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Rxd5#
      • 1...Kxd3
        • 2.Qd1#
      • 1...Qxf5
        • 2.Qe3#
      • 1...Bxf5
        • 2.Rg3#
      • 1...cxd3
        • 2.Rc7#
      • 1...exd3
        • 2.Re7#
      • 1...Qh5
        • 2.Qe3#
      • 1...Bf7
        • 2.Rg3#
      • 1...Sb4
        • 2.Qxc3#
      • 1...Sxf5!
    • 1.Rd7?
      • threat
        • 2.Rxd5#
      • 1...Kxd3
        • 2.Qd1#
      • 1...Qxd7
        • 2.Qe3#
      • 1...cxd3
        • 2.Rc6#
      • 1...exd3
        • 2.Re6#
      • 1...Qf5
        • 2.Qe3#
      • 1...Qe6
        • 2.Qe3#
      • 1...Qh5
        • 2.Qe3#
      • 1...Sb4
        • 2.Qxc3#
      • 1...Bf7!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rxd5#
      • 1...Kxd3
        • 2.Qd1#
      • 1...cxd3
        • 2.Rc7#
      • 1...exd3
        • 2.Re7#
      • 1...Qf5
        • 2.Qe3#
      • 1...Qe6
        • 2.Qe3#
      • 1...Qd7
        • 2.Qe3#
      • 1...Qh5
        • 2.Qe3#
      • 1...Bf7
        • 2.Rg3#
      • 1...Sb4
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • K(e);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
    • Q(c);N_GUARD::QAB1(A)
    • Q(c);N_GUARD::QAB1(A),XQ(c)
    • S(a);N_GUARD::QAB1(A),XP(b)
  • Tries
    • Try
      • R(G);
      • Threat
        • R1(G),XP(g)
      • Vars
        • K(e);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
        • Q(c);N_GUARD,XR(G)::QAB1(A)
        • B(h);OGATE,XR(G)::B(J)+R(H)
        • P(d);SBLOCK,XP(D)::B(J)+R(H)
        • P(f);SBLOCK,XP(D)::B(J)+R(H)
        • Q(c);N_GUARD::QAB1(A)
        • B(h);OGATE::B(J)+R(H)
        • S(a);N_GUARD::QAB1(A),XP(b)
      • Refutation
        • S(i);XR(G)
    • Try
      • R(H);P_PINP(g)
      • Threat
        • R1(H),XP(g)
      • Vars
        • K(e);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
        • Q(c);N_GUARD,N_SPINP(g),XR(H)::QAB1(A)
        • P(d);SBLOCK,XP(D)::B(J)+R(G)
        • P(f);SBLOCK,XP(D)::B(J)+R(G)
        • Q(c);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XP(b)
      • Refutation
        • B(h);
  • Actual
    • R(G);P_PINP(g)
    • Threat
      • R1(G),XP(g)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
      • P(d);SBLOCK,XP(D)::B(J)+R(H)
      • P(f);SBLOCK,XP(D)::B(J)+R(H)
      • Q(c);N_GUARD::QAB1(A)
      • B(h);OGATE::B(J)+R(H)
      • S(a);N_GUARD::QAB1(A),XP(b)
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