MESON Chess Problem Database

Problem Display
PID: 134864 (2R1b3/4rQ2/n2kPp1N/1P3K1p/1PB5/6Pr/qN1P3B/1n1R4 w - - 0 1)

Rothenberg, PL

The Field, 1969

(First published on Thu Jun 12 1969)

2R1b3/4rQ2/n2kPp1N/1P3K1p/1PB5/6Pr/qN1P3B/1n1R4

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg3
      • 2.Bxg3#
    • 1...Rh4
      • 2.gxh4#
    • 1...Rxe6
      • 2.Qxe6#
    • 1...Rd7
      • 2.Rc6#
    • 1...Bc6
      • 2.Rxc6#
    • 1...Bxf7
      • 2.Rc6#
    • 1...Sxd2
      • 2.Rxd2#
    • 1...Sc3
      • 2.dxc3#
    • 1...Sc5
      • 2.bxc5#
  • Tries
    • 1.g4+?
      • 1...Rg3
        • 2.Bxg3#
      • 1...Rxh2!
  • Keys
    • 1.Ke4!
      • threat
        • 2.Sf5#
      • 1...Qxc4+
        • 2.Sxc4#
      • 1...Rh4+
        • 2.gxh4#
      • 1...Rxe6+
        • 2.Qxe6#
      • 1...Bc6+
        • 2.Rxc6#
      • 1...Sxd2+
        • 2.Rxd2#
      • 1...Sc3+
        • 2.dxc3#
      • 1...Sc5+
        • 2.bxc5#
      • 1...f5+
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);OGATE,P_SPINR(c),XP(E)::B(D),XR(c)
    • R(c);OGATE::B(D)+P(E),XR(c)
    • R(h);OGATE,XP(J)::QAR1(L),XR(h)
    • R(h);S_CUTB(i)::R1(M)
    • B(i);N_GUARD::R1(M),XB(i)
    • B(i);N_GUARD,XQ(L)::R1(M)
    • S(a);OGATE,P_SPINS(a),XP(C)::R(A),XS(a)
    • S(a);OGATE::R(A)+P(C),XS(a)
    • S(e);OGATE::P(F),XS(e)
  • Tries
    • Try
      • P(E);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(D),XR(c)
      • Refutation
        • R(c);XB(D)
  • Actual
    • K(I);P_SPINP(J),S_FLIGHT
    • Threat
      • S(K)
    • Vars
      • Q(b);CHECK,XB(G)::S(B),XQ(b)
      • R(c);CHECK,OGATE::B(D)+P(E),XR(c)
      • R(h);CHECK,OGATE,XP(J)::QAR1(L),XR(h)
      • B(i);CHECK,N_GUARD::R1(M),XB(i)
      • S(a);CHECK,OGATE,P_SPINS(a),XP(C)::R(A),XS(a)
      • S(a);CHECK,OGATE::R(A)+P(C),XS(a)
      • S(e);CHECK,OGATE::P(F),XS(e)
      • P(g);CHECK::S(K),XP(g)
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