MESON Chess Problem Database

Problem Display
PID: 10126 (n6b/1N1R1K1p/2N3p1/1R4pp/r1p1k3/p5P1/1P1p1P2/3B4 w - - 0 1)

Lipton, Michael

3rd Prize, Die Schwalbe, 1962

n6b/1N1R1K1p/2N3p1/1R4pp/r1p1k3/p5P1/1P1p1P2/3B4

#2

9 + 11

3174 The Two-move Chess Problem Tradition and Development 1966
3747 FIDE Album (1962-1964) 1968
5862 An ABC of Chess Problems 1970
4640 Chess Wizardry: The New ABC of Chess Problems 1996
56 The Problemist 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Rxd4#
    • 1...Be5
      • 2.Rxe5#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Sc5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Sc7+!
    • 1.Sd4?
      • threat
        • 2.Bc2#
      • 1...Kd3
        • 2.Sc5#
        • 2.Bc2#
      • 1...Bxd4!
    • 1.Se5?
      • threat
        • 2.Bc2#
      • 1...Kf5
        • 2.Sd6#
        • 2.Bc2#
      • 1...Bxe5!
    • 1.Bg4?
      • threat
        • 2.Sc5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...hxg4!
    • 1.Rxg5?
      • threat
        • 2.Sc5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Ra5!
    • 1.Rxd2?
      • threat
        • 2.Sd6#
      • 1...Be5
        • 2.Rxe5#
      • 1...Ra7!
    • 1.Rd3?
      • threat
        • 2.Re3#
      • 1...Kxd3
        • 2.Sc5#
      • 1...cxd3
        • 2.Sd6#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Be5!
    • 1.Re7+?
      • 1...Kd3
        • 2.Sc5#
        • 2.Re3#
      • 1...Be5!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Bc2#
      • 1...Kxf5
        • 2.Sd6#
      • 1...gxf5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(k);N_GUARD::R1(H),XB(k)
    • B(k);N_GUARD::R1(E),XB(k)
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Threat
        • S(G)
      • Vars
        • B(k);N_GUARD::R1(H),XB(k)
      • Refutation
        • S(j);CHECK
    • Try
      • S(F);
      • Threat
        • B(A)
      • Refutation
        • B(k);XS(F)
    • Try
      • S(F);
      • Threat
        • B(A)
      • Refutation
        • B(k);XS(F)
    • Try
      • B(A);
      • Threat
        • S(G)
      • Vars
        • B(k);N_GUARD::R1(H),XB(k)
      • Refutation
        • P(g);XB(A)
    • Try
      • R(E);XP(f)
      • Threat
        • S(G)
      • Vars
        • B(k);N_GUARD::R1(H),XB(k)
      • Refutation
        • R(c);
    • Try
      • R(H);XP(a)
      • Threat
        • S(G)
      • Vars
        • B(k);N_GUARD::R1(E),XB(k)
      • Refutation
        • R(c);P_PINS(G)
    • Try
      • R(H);
      • Threat
        • R1(H)
      • Vars
        • K(e);S_FLIGHT,XR(H)::S(G)
        • P(d);SBLOCK,XR(H)::S(G)
        • B(k);N_GUARD::R1(H),XB(k)
      • Refutation
        • B(k);
    • Try
      • R(H);CHECK
      • Refutation
        • B(k);P_SPINB(k)
  • Actual
    • R(E);
    • Threat
      • B(A)
    • Vars
      • K(e);S_FLIGHT,XR(E)::S(G)
      • P(h);SBLOCK,XR(E)::S(G)
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