MESON Chess Problem Database

Problem Display
PID: 233797 (2R2BBb/1pr2b2/n1N5/R4K1p/2k2P2/P1p4r/2Q5/1n3N2 w - - 0 1)

Schreiber, Kurt

Freie Presse, 1988

2R2BBb/1pr2b2/n1N5/R4K1p/2k2P2/P1p4r/2Q5/1n3N2

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Se3#
    • 1...Rh2
      • 2.Se3#
    • 1...Rd3
      • 2.Qa2#
    • 1...Re3
      • 2.Sxe3#
    • 1...Rh4
      • 2.Se3#
    • 1...Rxc8
      • 2.Bxf7#
    • 1...Bd5
      • 2.Bxd5#
    • 1...Be6+
      • 2.Bxe6#
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sxa3
      • 2.Sd2#
    • 1...Sb4
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sb8
      • 2.Rc5#
  • Tries
    • 1.Se5+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Bxe5!
    • 1.Rd8?
      • threat
        • 2.Qa2#
      • 1...Be6+
        • 2.Bxe6#
      • 1...Rh2
        • 2.Se3#
      • 1...Bd5
        • 2.Bxd5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sb4
        • 2.Rc5#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Rd7!
    • 1.Qa4+?
      • 1...Kd3
        • 2.Qe4#
      • 1...Sb4!
    • 1.Qe2+?
      • 1...Rd3
        • 2.Qa2#
      • 1...Kb3!
  • Keys
    • 1.Ke4!
      • threat
        • 2.Qa2#
      • 1...Re3+
        • 2.Sxe3#
      • 1...Re7+
        • 2.Se5#
      • 1...Bd5+
        • 2.Bxd5#
      • 1...Sd2+
        • 2.Sxd2#
      • 1...Sc5+
        • 2.Rxc5#
      • 1...Rh2
        • 2.Se3#
      • 1...Sb4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::S(A)
    • R(c);SBLOCK::QAB(B)
    • R(c);N_GUARD::S(A),XR(c)
    • R(h);N_GUARD,XR(H)::B(J),XB(i)
    • B(i);OGATE::B(J),XB(i)
    • B(i);CHECK,OGATE::B(J),XB(i)
    • S(a);N_GUARD::S(A),XS(a)
    • S(a);N_GUARD,XP(C)::S(A)
    • S(f);N_GUARD::R1(E)
    • S(f);N_GUARD::R1(E),XS(f)
  • Tries
    • Try
      • S(G);CHECK,P_PINR(h)
      • Vars
        • K(d);N_SPINB(i),N_SPINP(b),N_SPINR(h),P-FLIGHT::QAR1(B)
      • Refutation
        • B(j);XS(G)
    • Try
      • R(H);
      • Threat
        • QAB(B)
      • Vars
        • B(i);CHECK,OGATE::B(J),XB(i)
        • R(c);N_GUARD::S(A)
        • B(i);OGATE::B(J),XB(i)
        • B(j);N_GUARD::R1(H),XB(j)
        • S(a);N_GUARD::S(A),XS(a)
        • S(f);N_GUARD::R1(E)
        • S(f);N_GUARD::R1(E),XS(f)
      • Refutation
        • R(h);
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Vars
        • K(d);N_SPINB(i),OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Vars
        • R(c);P_SPINR(c),SBLOCK::QAB(B)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAB(B)
    • Vars
      • R(c);CHECK,N_GUARD::S(A),XR(c)
      • R(h);CHECK::R(H)+S(G),DCHECK
      • B(i);CHECK,OGATE::B(J),XB(i)
      • S(a);CHECK,N_GUARD::S(A),XS(a)
      • S(f);CHECK,N_GUARD::R1(E),XS(f)
      • R(c);N_GUARD::S(A)
      • S(f);N_GUARD::R1(E)
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