MESON Chess Problem Database

Problem Display
PID: 66620 (8/8/1BB5/4r1b1/b2r1p2/2R1NP1K/2pRPk2/2Q1n3 w - - 0 1)

Neumann, Itzhak

American Chess Bulletin, 1936

8/8/1BB5/4r1b1/b2r1p2/2R1NP1K/2pRPk2/2Q1n3

#2

9 + 8

5828 My Selected Chess Problems (Neumann) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Kg1
      • 2.Qxe1#
    • 1...Sg2
      • 2.Sg4#
      • 2.Qf1#
    • 1...Sd3
      • 2.Sg4#
    • 1...Sxf3
      • 2.Sg4#
      • 2.Qf1#
  • Tries
    • 1.Sxc2?
      • threat
        • 2.Qxe1#
      • 1...Kf1
        • 2.Qxe1#
      • 1...Kg1
        • 2.Qxe1#
      • 1...Sxc2
        • 2.e4#
      • 1...Sxf3
        • 2.Rxf3#
      • 1...Sg2
        • 2.e4#
      • 1...Sd3
        • 2.e3#
      • 1...Bxc2!
    • 1.Sg4+?
      • 1...Kg1
        • 2.Qxe1#
      • 1...Kf1!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Qxe1#
      • 1...Kf1
        • 2.Qxe1#
      • 1...Kg1
        • 2.Qxe1#
      • 1...Sxg2
        • 2.e4#
      • 1...Sxf3
        • 2.Rxf3#
      • 1...Sd3
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINS(a),S_FLIGHT::QAR2(A),XS(a)
    • S(a);::S(E)
  • Tries
    • Try
      • S(E);P_PINR(e),XP(b)
      • Threat
        • QAB1(A),XS(a)
      • Vars
        • K(c);N_SPINR(e),P-FLIGHT,P_SPINS(a)::QAR1(A),XS(a)
        • K(c);P_SPINS(a),S_FLIGHT::QAR2(A),XS(a)
        • S(a);XS(E)::R(B)+P(C)
        • S(a);OGATE,XP(F)::R1(D),XS(a)
        • S(a);::R(B)+P(C)
      • Refutation
        • B(d);XS(E)
    • Try
      • S(E);CHECK,P_PINR(e)
      • Vars
        • K(c);P_SPINS(a),S_FLIGHT::QAR2(A),XS(a)
      • Refutation
        • K(c);N_SPINR(e),P-FLIGHT,P_SPINS(a)
  • Actual
    • S(E);P_PINR(e)
    • Threat
      • QAB1(A),XS(a)
    • Vars
      • K(c);N_SPINR(e),P-FLIGHT,P_SPINS(a)::QAR1(A),XS(a)
      • K(c);P_SPINS(a),S_FLIGHT::QAR2(A),XS(a)
      • S(a);XS(E)::R(B)+P(C)
      • S(a);OGATE,XP(F)::R1(D),XS(a)
      • S(a);::R(B)+P(C)
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