MESON Chess Problem Database

Problem Display
PID: 66823 (2r5/BbN5/1PQp1p2/4bB2/Pp1k1q1R/1P1r2p1/1P1RP2P/2K5 w - - 0 1)

Neumann, Itzhak

2nd Prize, Brisbane Sports and Radio, 1933

(First published on Sat Oct 14 1933)

2r5/BbN5/1PQp1p2/4bB2/Pp1k1q1R/1P1r2p1/1P1RP2P/2K5

#2

13 + 10

5828 My Selected Chess Problems (Neumann) 1968
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxd3#
      • 2.Rxe4#
    • 1...Qg4
      • 2.Rxd3#
    • 1...Qxh4
      • 2.Rxd3#
    • 1...Rxc7
      • 2.bxc7#
    • 1...Ba6
      • 2.b7#
    • 1...Bxc6
      • 2.b7#
    • 1...Ba8
      • 2.b7#
  • Tries
    • 1.Qe4+?
      • 1...Kc5
        • 2.Se6#
      • 1...Bxe4
        • 2.b7#
      • 1...Qxe4!
    • 1.Qd5+?
      • 1...Bxd5
        • 2.b7#
      • 1...Ke3!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qg1#
      • 1...Rxc7+
        • 2.bxc7#
      • 1...Ke3
        • 2.Rxd3#
      • 1...Kc5
        • 2.Se6#
      • 1...Bxg2
        • 2.b7#
      • 1...gxh2
        • 2.Qf2#
      • 1...Be4
        • 2.b7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(e);N_PINR(C)::R1(C),XR(a)
    • Q(e);N_PINR(C),N_SPINQ(e),XR(H)::R1(C),XR(a)
    • R(j);OGATE,P_PINQ(K),XS(M)::B(L)+P(J),XR(j)
    • B(i);OGATE::B(L)+P(J)
    • B(i);OGATE,XQ(K)::B(L)+P(J)
  • Tries
    • Try
      • Q(K);CHECK,N_PINQ(e),P_SPINS(M)
      • Vars
        • K(d);N_PINS(M),N_SPINR(a),S_FLIGHT::S(M)
        • B(i);OGATE,XQ(K)::B(L)+P(J)
      • Refutation
        • Q(e);N_PINR(C),P_SPINQ(e),XQ(K)
    • Try
      • Q(K);CHECK,P_SPINS(M)
      • Vars
        • B(i);OGATE,XQ(K)::B(L)+P(J)
      • Refutation
        • K(d);N_PINR(C),N_SPINQ(e),N_SPINR(a),S_FLIGHT
  • Actual
    • Q(K);P_SPINS(M)
    • Threat
      • QAB(K)
    • Vars
      • R(j);CHECK,OGATE,XS(M)::B(L)+P(J),XR(j)
      • K(d);N_PINR(C),N_SPINQ(e),N_SPINR(a),S_FLIGHT::R1(C),XR(a)
      • K(d);N_PINS(M),N_SPINQ(e),N_SPINR(a),S_FLIGHT::S(M)
      • B(i);OGATE,XQ(K)::B(L)+P(J)
      • P(b);N_GUARD,XP(E)::QAB(K)
      • B(i);N_SPINQ(e),OGATE::B(L)+P(J)
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