MESON Chess Problem Database

Problem Display
PID: 45 (3N1n2/K2b1Rn1/1Q6/p2k1q2/2p1pP2/2r1r3/3P4/3N4 w - - 0 1)

Loshinski, Lev Ilich

Die Schwalbe, 1930

3N1n2/K2b1Rn1/1Q6/p2k1q2/2p1pP2/2r1r3/3P4/3N4

#2

7 + 10

35 L'Italia Scacchistica 1930
3147 Chess Problems: Introduction to an Art 1963
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sxe3#
    • 1...Rc2
      • 2.Sxe3#
    • 1...Re1
      • 2.Sxc3#
    • 1...Re2
      • 2.Sxc3#
    • 1...Sge6
      • 2.Rxf5#
    • 1...Sfe6
      • 2.Rxd7#
  • Tries
    • 1.dxc3?
      • threat
        • 2.Sxe3#
        • 2.Qd4#
      • 1...Qxf4
        • 2.Qd4#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Bc6
        • 2.Qd4#
        • 2.Qxc6#
      • 1...Qh3
        • 2.Qd4#
      • 1...Qe5
        • 2.Sxe3#
      • 1...Qf6
        • 2.Sxe3#
      • 1...Re1
        • 2.Qd4#
      • 1...Re2
        • 2.Qd4#
      • 1...Rf3
        • 2.Qd4#
      • 1...Rg3
        • 2.Qd4#
      • 1...Rh3
        • 2.Qd4#
      • 1...Sge6
        • 2.Sxe3#
        • 2.Rxf5#
      • 1...Sfe6
        • 2.Sxe3#
        • 2.Rxd7#
      • 1...Rd3!
  • Keys
    • 1.d4!
      • threat
        • 2.Qc5#
      • 1...cxd4 ep
        • 2.Sxe3#
      • 1...exd4 ep
        • 2.Sxc3#
      • 1...Sge6
        • 2.Rxf5#
      • 1...Sfe6
        • 2.Rxd7#

This anticipates 262023(1953)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::S(A),XR(b)
    • R(b);N_GUARD::S(A),XR(a)
    • S(i);N_GUARD,S_CUTB(h)::R(F),XQ(g)
    • S(j);N_GUARD,S_CUTQ(g)::R(F),XB(h)
  • Tries
    • Try
      • P(B);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XP(C)::QAR1(D)
        • R(b);XP(B)::S(A),XR(b)
        • Q(g);::QAR1(D)
        • Q(g);::S(A),XR(b)
        • R(b);::QAR1(D)
      • Refutation
        • R(b);
  • Actual
    • P(B);
    • Threat
      • QAR1(D)
    • Vars
      • P(c);EP,S_CUTR(a),XP(B)::S(A),XR(b)
      • P(d);EP,S_CUTR(b),XP(B)::S(A),XR(a)
      • S(i);N_GUARD,S_CUTB(h)::R(F),XQ(g)
      • S(j);N_GUARD,S_CUTQ(g)::R(F),XB(h)
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