MESON Chess Problem Database

Problem Display
PID: 208466 (4R3/4b1B1/3PQ3/2pr2Pq/2p3n1/1N1k1n2/3p1rB1/R2K1N1b w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1987

4R3/4b1B1/3PQ3/2pr2Pq/2p3n1/1N1k1n2/3p1rB1/R2K1N1b

#2

10 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf1+
      • 2.Bxf1#
    • 1...Re2
      • 2.Qxe2#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Rxd6
      • 2.Sxc5#
      • 2.Qf5#
    • 1...Bxg5
      • 2.Qe4#
    • 1...Bxd6
      • 2.Qe4#
    • 1...Bd8
      • 2.Qe4#
    • 1...Bf8
      • 2.Qe4#
    • 1...Se1
      • 2.Qxd5#
      • 2.Qe4#
    • 1...Sg1
      • 2.Qxd5#
      • 2.Qe4#
    • 1...Sfh2
      • 2.Qxd5#
      • 2.Qe4#
    • 1...Sh4
      • 2.Qxd5#
      • 2.Qe4#
    • 1...Sxg5
      • 2.Qxd5#
    • 1...Sgh2
      • 2.Qe3#
    • 1...Se3+
      • 2.Qxe3#
    • 1...Sf6
      • 2.Qe3#
    • 1...Sh6
      • 2.Qe3#
  • Tries
    • 1.Qg6+?
      • 1...Rf5
        • 2.Sxc5#
        • 2.Qxf5#
      • 1...Qxg6!
  • Keys
    • 1.Rc1!
      • threat
        • 2.Rc3#
      • 1...Rxf1+
        • 2.Bxf1#
      • 1...Se3+
        • 2.Qxe3#
      • 1...dxc1Q+
        • 2.Sxc1#
      • 1...dxc1R+
        • 2.Sxc1#
      • 1...dxc1S
        • 2.Sxc1#
      • 1...dxc1B
        • 2.Sxc1#
      • 1...Re5
        • 2.Qxc4#
      • 1...Sge5
        • 2.Qf5#
      • 1...c3
        • 2.Rxc3#
      • 1...Rd4
        • 2.Sxc5#
      • 1...Bf6
        • 2.Qe4#
      • 1...Sd4
        • 2.Qe4#
      • 1...Sfe5
        • 2.Qxd5#
      • 1...Sf6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 9
  • Sets
    • R(c);CHECK,OGATE,XS(C)::B(D),XR(c)
    • R(c);N_GUARD::QAB1(H),XR(c)
    • R(i);N_GUARD::QAB(H),XR(i)
    • B(k);XP(F)::QAB1(H)
    • B(k);XP(G)::QAB1(H)
    • B(k);::QAB1(H)
    • S(e);N_GUARD,XP(F)::QAR2(H),XR(i)
    • S(g);N_GUARD::QAR1(H)
    • S(g);CHECK,N_GUARD::QAR1(H),XS(g)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • Q(j);XQ(H)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • R(c);CHECK,OGATE,XS(C)::B(D),XR(c)
      • S(g);CHECK,N_GUARD::QAR1(H),XS(g)
      • P(b);CHECK,XR(A)::S(E),XQ(b)
      • P(b);CHECK,XR(A)::S(E),XR(b)
      • P(b);XR(A)::S(E),XS(b)
      • P(b);XR(A)::S(E),XB(b)
      • R(i);OGATE::QAB1(H),XP(f)
      • S(g);S_CUTR(i)::QAB(H)
      • P(f);::R1(A),XP(f)
      • R(i);N_GUARD::S(E),XP(h)
      • B(k);::QAB1(H)
      • S(e);::QAB1(H)
      • S(e);N_GUARD::QAR2(H),XR(i)
      • S(g);N_GUARD::QAR1(H)
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