MESON Chess Problem Database

Problem Display
PID: 243941 (1BBn3b/8/8/2pr1pn1/3NkPP1/3R4/2Q3PK/4Nb2 w - - 0 1)

Grinblat, Arieh

Revista Romana de Sah, 1926

1BBn3b/8/8/2pr1pn1/3NkPP1/3R4/2Q3PK/4Nb2

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Qxe2#
    • 1...Bxg2
      • 2.Qe2#
    • 1...Bxd3
      • 2.Qxd3#
    • 1...Sf3+
      • 2.gxf3#
  • Tries
    • 1.Rd1+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Ke3!
    • 1.Rd2+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Ke3!
    • 1.Ra3+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kxd4!
    • 1.Rb3+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kxd4!
    • 1.Rc3+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kxd4!
    • 1.Re3+?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kxe3!
    • 1.Rf3+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kxd4!
    • 1.Rg3+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kxd4!
    • 1.Rh3+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kxd4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sg3#
      • 1...Sf3+
        • 2.gxf3#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Bxe2
        • 2.Qxe2#
      • 1...Rd4
        • 2.Sc3#
      • 1...Re5
        • 2.Qc4#
      • 1...Rd6
        • 2.Bxf5#
      • 1...Be5
        • 2.Bxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAR2(B),XB(a)
    • B(a);N_GUARD,XP(C)::QAR2(B)
    • B(a);OGATE,P_SPINB(a),XR(E)::QAB1(B),XB(a)
    • S(f);CHECK,OGATE::P(C),XS(f)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(F)::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(f);CHECK,OGATE::P(C),XS(f)
      • R(d);OGATE,P_SPINR(d),XR(E)::QAB1(B),XR(d)
      • B(a);OGATE,XS(F)::QAR2(B),XB(a)
      • R(d);S_CUTB(h)::S(F)
      • R(d);N_GUARD,S_CUTB(h)::QAR2(B)
      • R(d);N_GUARD::B(J),XP(e)
      • B(h);P_PINP(G),S_CUTR(d)::B(J),XP(e)
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