MESON Chess Problem Database

Problem Display
PID: 43242 (6nB/1B3Q2/p3NP2/Rq3k2/3RN3/1P4PP/1KP5/1n1r4 w - - 0 1)

Guttman, Newman

1st Prize, Gamage MT (Chess Life), 1957-1958

6nB/1B3Q2/p3NP2/Rq3k2/3RN3/1P4PP/1KP5/1n1r4

#2

13 + 6

268 Chess Life 1959
102 Probleemblad 2002
56 The Problemist 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Rxc5#
    • 1...Qd5
      • 2.Raxd5#
    • 1...Qe5
      • 2.Sd6#
      • 2.Sg7#
      • 2.g4#
    • 1...Sxf6
      • 2.Qxf6#
    • 1...Se7
      • 2.fxe7#
  • Tries
    • 1.S4c5?
      • threat
        • 2.Qh5#
      • 1...Qxb3+
        • 2.Sxb3#
      • 1...Ke5
        • 2.Qh5#
      • 1...Qxc5
        • 2.Rxc5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Qe8
        • 2.Sd7#
      • 1...Qe2!
    • 1.Sf4?
      • threat
        • 2.Qh5#
        • 2.Qe6#
      • 1...Sxf6
        • 2.Qe6#
        • 2.Qxf6#
      • 1...Ke5!
    • 1.S6c5?
      • threat
        • 2.Qh5#
      • 1...Qxb3+
        • 2.Sxb3#
      • 1...Ke5
        • 2.Qd5#
      • 1...Qxc5
        • 2.Rxc5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Qe2
        • 2.Sd3#
      • 1...Qe8!
    • 1.Sc7?
      • threat
        • 2.Qh5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Ke5!
    • 1.Sd8?
      • threat
        • 2.Qh5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Ke5!
    • 1.Sf8?
      • threat
        • 2.Qh5#
        • 2.Qe6#
      • 1...Sxf6
        • 2.Qe6#
        • 2.Qxf6#
      • 1...Ke5!
    • 1.Bc8?
      • threat
        • 2.Qh5#
      • 1...Ke5
        • 2.Qh5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Rxd4!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qh5#
      • 1...Qxb3+
        • 2.Bxb3#
      • 1...Ke5
        • 2.Qh5#
      • 1...Qxd5
        • 2.Raxd5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Qe2
        • 2.Bc4#
      • 1...Qe8
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(c);N_PINP(C),OGATE::R(H),XQ(c)
    • S(f);OGATE,P_SPINS(f),XP(J)::QAR1(L),XS(f)
    • S(f);OGATE::QAR(L)+P(J),XS(f)
  • Tries
    • Try
      • S(G);N_PINQ(c)
      • Threat
        • QAR2(L)
      • Vars
        • Q(c);CHECK,XP(C)::R(H)+S(G),XQ(c)
        • K(d);P-FLIGHT::QAR(L)
        • Q(c);N_PINP(C),OGATE,P_SPINQ(c),XS(G)::R(H),XQ(c)
        • S(f);OGATE,P_SPINS(f),XP(J)::QAR1(L),XS(f)
        • Q(c);N_PINP(C)::R(H)+S(G)
      • Refutation
        • Q(c);N_PINP(C),P_PINP(B)
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(I);N_PINQ(c)
      • Threat
        • QAR2(L)
      • Vars
        • Q(c);CHECK,XP(C)::R(H)+S(I),XQ(c)
        • K(d);P-FLIGHT::QAR1(L)
        • Q(c);N_PINP(C),OGATE,P_SPINQ(c),XS(I)::R(H),XQ(c)
        • S(f);OGATE,P_SPINS(f),XP(J)::QAR1(L),XS(f)
        • Q(c);N_PINP(C),P_PINP(B)::R(H)+S(I)
      • Refutation
        • Q(c);N_PINP(C)
    • Try
      • S(I);
      • Threat
        • QAR2(L)
      • Vars
        • S(f);OGATE,P_SPINS(f),XP(J)::QAR1(L),XS(f)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(I);
      • Threat
        • QAR2(L)
      • Vars
        • S(f);OGATE,P_SPINS(f),XP(J)::QAR1(L),XS(f)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(K);
      • Threat
        • QAR2(L)
      • Vars
        • K(d);P-FLIGHT::QAR(L)
        • S(f);OGATE,P_SPINS(f),XP(J)::QAR1(L),XS(f)
      • Refutation
        • R(b);XR(F)
  • Actual
    • B(K);N_PINQ(c)
    • Threat
      • QAR2(L)
    • Vars
      • Q(c);CHECK,OGATE,XP(C)::R(H)+B(K),XQ(c)
      • K(d);P-FLIGHT::QAR(L)
      • Q(c);N_PINP(C),OGATE,P_SPINQ(c),XB(K)::R(H),XQ(c)
      • S(f);OGATE,P_SPINS(f),XP(J)::QAR1(L),XS(f)
      • Q(c);N_PINP(C),OGATEB,P_PINP(B)::R(H)+B(K)
      • Q(c);N_PINP(C),OGATEB::R(H)+B(K)
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