MESON Chess Problem Database

Problem Display
PID: 108275 (1r6/p2B1p2/1B1P3n/2P1p3/p1N1k3/1pP1n1P1/4Q1P1/Rb5K w - - 0 1)

Erenburg, Mark

Mat 20. TT, 1990

1r6/p2B1p2/1B1P3n/2P1p3/p1N1k3/1pP1n1P1/4Q1P1/Rb5K

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qf3#
    • 1...Sf5
      • 2.Bc6#
    • 1...f5
      • 2.Bc6#
  • Tries
    • 1.Sxe3?
      • threat
        • 2.Bc6#
        • 2.Rxa4#
      • 1...Rc8
        • 2.Rxa4#
      • 1...Ba2
        • 2.Bc6#
      • 1...Bd3
        • 2.Bc6#
        • 2.Qf3#
      • 1...Sf5
        • 2.Bxf5#
        • 2.Bc6#
      • 1...a3
        • 2.Bc6#
      • 1...Rxb6!
    • 1.Be6?
      • threat
        • 2.Sd2#
        • 2.Qxe3#
      • 1...Sg4
        • 2.Sd2#
      • 1...Sf5
        • 2.Sd2#
      • 1...fxe6!
  • Keys
    • 1.Rxa4!
      • threat
        • 2.Sxe3#
      • 1...Kd5
        • 2.Sxe3#
      • 1...Rxb6
        • 2.Sxb6#
      • 1...Bd3
        • 2.Qf3#
      • 1...Sf5
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::QAB1(C)
    • S(g);SBLOCK::B(K)
    • P(i);SBLOCK::B(K)
  • Tries
    • Try
      • S(G);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(j);::R(A),XP(d)
        • B(a);::B(K)
        • P(d);::B(K)
      • Refutation
        • R(j);XB(I)
    • Try
      • B(K);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);::S(G)
      • Refutation
        • P(i);XB(K)
  • Actual
    • R(A);XP(d)
    • Threat
      • R(A)+S(G),XS(c)
    • Vars
      • K(e);N_SPINS(c),S_FLIGHT::S(G),XS(c)
      • R(j);XB(I)::R(A)+S(G),XR(j)
      • B(a);SBLOCK::QAB1(C)
      • S(g);SBLOCK::B(K)
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